Just curious. What's the general audiophile of Sonos speakers?

Connect in its ZP90 incarnation is bit perfect...
Maybe, but the only Connect that you can buy new isn't, AIUI

Contemporary music usually has very simple titles, which don't take up much space. Classical music can have very long album and track titles, which also translates into tag length (if you want to know what you're playing, anyway).

Yep, I understand and know your problem. Apple Music, Spotify, Deezer, they are all build to index contemporary music. It's not only the fact that there is an artist and a composer and a conductor and a orchestra,... there is also the fact that there is no standard in tagging.

Finding your way in classical music tracks is an adventure 🙂

Finding your way in classical music tracks is an adventure :)
Yes, it is :D
Having got the Chromecast Audio working, it's playing through the Play 5 via my phone at the moment. I found a good Android app called Hi-Fi Cast - Music Player which works well, but also seems quite configurable. It's impressive that I can play music via the CA on the Play 5 direct to the ZP90 in the other room, whilst still listening to different music on the Play 5.
Having said that, the casting approach doesn't seem to have any limits on it, unlike Sonos, so I'm exploring the possibility that two CAs could actually replace the Sonos setup - for my particular purposes - I fully accept that they won't do everything that the Sonos kit does.

Good thoughts here. I started with a Play 5 (yesterday) and feel that the sound is quite good, and probably edges out than anything I could get at $1,500 or below (though I can get better volume). I am primarily using it for music only and may get a second Play 5 to set up in stereo. Maybe I'll eventually get a sub and an Amp as well. Anyway, I will admit that I was surprised at the sound quality (hip hop, alternative, classic rock, and jazz) when I first turned it on. I need to figure out how to tune the bass but I was very surprised. It certainly edges out everything from Bose.

We had a recent lively discussion on another thread about high-res. My experience in general (may not be your experience) is that given that the equipment stays the same, I feel more warmth when the file is high-res.

However, none of this matters. You get the biggest bang for the buck if the speakers are great.

In my experience, a pair of play 5’s even grouped together sounds as good as or better than it sounded played back at the studio (of course live sounds better). The new play 5’s I currently have blew me away with their sound quality, and sound as good as when played back at the studio with as good or better detail. Of course, studio monitors are flat - but I prefer some DSP in my music. Note: I do have a Klipsch sub in all the rooms with the Play 5.

This is my album: deepinthemeadow.com

When we recorded the Uillean pipes on the Tank Man track, it sounded amazing live, but I was sad that I felt we could not capture the magic in the recording. That is until I heard it played back on the Play 5. Brought tears to my eyes!!! Yes, we had captured the detail, but it could only be heard on the Play 5. The Focal Kevlar speakers sound better and they also come around the $1000 price range.

The quality of sound with Sonos is so good, I sold all my old speakers - a lot of them Bose and replaced with Sonos. Even the Sonos 1 Gen 2 sounds “open”, “clear”, as compared to Bose which always has higher bass at low volumes which sort of mutes out the mids and the highs.

The connect has amazing, amazing sound quality when connected to the same speakers compared to any receiver I have heard.

I have replaced all my receivers with Sonos connect + powered speakers in every room except my “studio” room which cannot have that 70ms Wifi delay. Many people say it is overpriced - but I think Sonos has given us amazing, amazing sound quality in the Connect at a reachable price and widely available with fast shipping and we can hear the speaker at BestBuy.

Of course, things probably get even better when you go beyond $1000 for a pair or a single speaker. But let’s us not talk about the 1% of people who can afford those speakers and have $1000+ phones. Let us talk about normal, regular hardware working folks for which even $499 for a good speaker is out of reach. I needed more expensive speakers so I could test it out on different speakers and improve the final MIX - a process which takes months and listening to the same song on different speakers many times a day.

Conclusion: You got two play 5’s for $499. You paid a lot of money and you are thinking could it have gotten better If it played back high-res? It is audiophile quality?

Answer: You got more than your moneys worth. These are amazing, amazing speakers for a very decent price.

You are not missing anything paying more for better getting lower or similar priced “audiophile” equipment which does not give you the convenience of wireless music. Audiophile is pain getting all the equipment, and getting it all together to make end to end high-res. And it will always be clunky until someone can do it end to end. Most people don’t even have gigabit Ethernet at home, and CD quality music itself causes network congestion - high-res would be worse. So, overall your experience would be horrible and you will feel cheated for all the inconvenience and problems which come with high-res.

Even if I had a little more money to spend, I would probably still stick with Sonos products over say Bluesound. Sonos sells a lot of these speakers at scale, so overall better experience, more stable, longevity, etc will be with Sonos.

Thank you for Gen 2 Sonos! You guys rock!!! - and this comes from a very hard to please guy who has never felt this excited listening to music for a very, very long time! You have rocked my world!!!

Unless the word "audiophile" is defined, any discussion on whether Sonos qualifies for that tag is futile.
Even if it is defined as "expensive" there are enough people that think Sonos to be too costly as those that think it is cheap mass market.
That said, I am very surprised to hear Sonos staff deny here that Sonos make audiophile speakers.

https://www.lifewire.com/sonos-play-1-measurements-4103874

Overall, performance measurements for wireless speakers — or any small speakers, really — rarely get better than this.

The frequency response for the Play:1 on-axis, 1 meter in front of the tweeter, is shown in the blue trace of the accompanying graph. Averaged response across a ±30 degree horizontal listening window is shown in the green trace. With a speaker frequency response measurement, you usually want the blue (on-axis) line to be as flat as possible and the green (averaged) response to be close to flat, perhaps with a mild reduction in treble response.

This performance is one that the designer of a $3,000 per pair speaker could be proud of. On-axis, it measures ±2.7 decibels. Averaged across the listening window, it's ±2.8 dB. This means that on-axis and off-axis performance are both superb and that the Play:1 should sound pretty good no matter where you place it in a room.

So, yes, they measure better than many an "audiophile" speaker. Sonos doesn't, however, target the fickle and often very silly "audiophile" market.

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That said, I am very surprised to hear Sonos staff deny here that Sonos make audiophile speakers.

I think they probably take the view that classing them as Audiophile would probably deter more people that it would attract.

If any sales staff start with mentioning Audiophile I switch off and assume =massive cost for very little extra benefit which i could probably not perceive anyway.

That said, I am very surprised to hear Sonos staff deny here that Sonos make audiophile speakers.
I found it refreshingly honest and realistic, personally....

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I think they probably take the view that classing them as Audiophile would probably deter more people that it would attract.

Now that you say so, perhaps. But I doubt that many would be as discerning as you about any negatives associated with that much abused and misused word, to the extent that no one really knows what it means anymore.