Ive got a Sonos play bar, sub and play:1's and agree, it is a superb solution. Although dolby digital only (for dts you'd need a bluray player that can convert dts to dd, like a ps3 or ps4) the quality is fantastic, in both sound and build!
The Only caveat I would add would be the digital output from the screen.
Most tv's will NOT pass through 5.1 from hdmi to optical, but will down sample to stereo. Check if yours does, ideally give the manufacturer a call to find out, or better still try to borrow a play bar to check at home.
Its not the end of the world if it doesn't though. Ive got a pioneer KRP-500a which down samples, so Ive added an optical switch, so all my source optical outs run to that. Yea, its an extra switch, but its worth it, TBH.
Obviously if 5.1 isn't really an issue then don't worry about the optical pass through issue, but its worth bearing in mind for the future.
