I have a Sony one and even tho the speakers can sound a little "tin" like, but im pretty impressed with it. My biggest complaint with it is that the speaker connections in the back are some sort of Sony connection which means i cant swap out the speakers if i ever wanted to.
HTIB are a dime a dozen and its actually quite confusing with all of the different model types, but i ended up going with whatever was the best value rather than spending big bucks on it seeing they wont sound as good as real speakers on real amps.
Samsung and Onkyo seem to be the go too units these days with LG and Sony not too far behind. But there seems to be a big push with these sound bars, heard a few and i was actually impressed... but no go if one wants 5.1+ surround.