I upgraded the living room Sonos ones to the era 100. It definitely much sounds better in that room. I was looking for more room filling sound and they just sound quite a bit better in a room that size. Music only with beam and sub. The entire room now sounds phenomenal. My living room always sounded a little bit thin even with full mode and upping the surrounds. Mid-range and bass both sound better.
Got rid of my play 3s when they kept losing connection even with boost and tech support, and switched to the newer ones. The era 100s both sound better and really fills the whole room with music. Fives would not perform well at lower volume plus shared walls can't blast out my neighbor.
I won't be upgrading the ones with beam and sub in my bedroom. So worth it for a bigger room.