I echo everything that's already been set about the Yamaha soundbar. Honestly, if you want a simplified system without all the cables of a full-fat 5.1 system, just get a stereo amp and a set of bookshelf speakers, which for less than a Yamaha soundbar will outperform it by a country mile. And that answer is amplified even further if you actually play music, but its also applicable to stereo TV and much TV is still streamed in stereo.
Soundbars have to be the most overrated overhyped product of the last few years and its sad that What Hifi have been pushing them so much in their magazine reviews without clearly explaining to unsuspecting punters how bad they really are. 5-star ratings for such products are very misleading without the qualifying caveat "for a soundbar". In my opinion their only benefit is their smaller visual impact on a room compared to other systems. But in every other respect, they're compromised.