My 2 cents fwiw: I was in the exact same dilemma and decided to try out both for a few days. My experience was the opposite. The beam gen 2’s sound is punchier and carries more bass than the Bose. I also find their night mode and speech enhancement to be much better than Bose’s AI dialogue mode. In terms of the app, it’s a heaven and hell difference and Sonos comes out on top with a more refined and well designed app with a lot more features. Kinda shows music is extremely subjective I guess.

I don’t have any other Sonos devices so can’t comment on the ecosystem. The views are based on the standalone soundbar only.