Well... this kind of soundbar system is that the old debate we had here about apple/HP/SONY/.. computers and custom build computers...
Soundbar system give you the convenience, "almost" wireless, and it is "almost" fool proof... however for the same price it will not be as good as a 5.1 system let alone with a customized surround systems (hand picked 5.1 receiver + 5 nice speakers of my choice + 1 nice sub which will send to sound to my bones).
Oh don't forget the SONY tax, too..
So what will you like? convenience? or the best performance/price ratio?
No right or wrong answer, it is your money... so... it is just the personal perference.