The Sonos Playbar has a very good reputation. It has 9 speakers in it, that's a large part of its success. For the money, you are unlikely to find a better soundbar.
I didn't go with the Sonos Playbar personally. I went with a Heos system because their other speakers, the 1, 3, 5, and 7 sound much better than the Sonos equivalents. The Heos Soundbar only has 4 speakers but hopefully it will sound pretty good.
You might save a few dollars by getting a Sony ST5 soundbar and coupling it with a Sonos Connect, but I'm not sure it's worth the money to go this route. You could do this with Heos as well but I don't think adding Connect or an equivalent to a soundbar is the best way to go, it's expensive once you buy all the pieces and any advantages are minimal.