I wouldn’t TBH. 

Sound quality, diversity of streaming sources, interaction between all other Sonos devices. 

Agreed, if it works in your environment, you have the patience of Job, you’re a geek or you like speaking to a succession of hopeless ‘technical specialists’ at Sonos’s HQ and are happy to send diagnostics every other day, then the Fives are for you….

DFTT

Why am I a troll, because  I don’t agree with you?

as far as I am aware these forums are for exchanging views, experiences and advice and that’s what I’m doing. 

Since it appears you already own a Sonos One, why not add to your Sonos system with Sonos’ best-sounding music speaker which is the Five. You will be able to group both speakers together and play the same music at the same time. The Five is also AirPlay 2 compatible just like the One. And if you have a turntable or CD player, you can connect it directly to the Five via the line in port.

How are you judging “best”? Does Sonos offer money-back-if-not-happy in your region. Buy the Fives. If you like them, keep them. If the other manufacturers also have confidence in their products by offering home trials, buy them too. Try them in your own home. Decide with your ears what sounds “best”. Return the unwanted items. 

I've not been the biggest fan of the Sonos App updates over the years but now it's all settled down it just works.

Was mulling over trying a different brand for outside speakers at the weekend but after using our whole house Sonos kit it would have been a daft decision.

As said you need to listen to the speakers to make your mind up but I've not been disappointed with any of our Sonos kit.

You're a troll because all you do is toss bombs that are meant to stir up crap.  That's the very definition of a troll.

I am looking for best wireless speakers. A lot of document recommended KEF lsx , klipsch fives and naim muso qb... Why should I buy sonos five?https://vlc.onl/

issue got slved!!

OP’s question is impossible to answer because there’s zero information about budget, preference or experience, merely some oblique reference to other mainstream wireless speakers.

FWIW, Sonos’ big selling point IMO is fuss-free setup of decent (probably not “best”) sounding speakers with Trueplay working very well to maximise sound quality despite room and positioning. For most people who will never dabble into room correction, Sonos Five may well be the best out of the box stereo experience.