I almost pulled the trigger on a Polk soundbar for much the same reason, but found myself in a house with a prewired 5.1 surround sound speaker system instead. This was a couple of years ago, though. I was going to buy just the bar and integrate it with my old stereo and new Polk subwoofer that I already had. Instead, I wound up just getting the new receiver I wanted
, so I can't tell you much how a soundbar sounds. Looks like they have made subwoofer/soundbar combos now, which they didn't offer back then.
I didn't like the Sony or Panasonic models that I saw when I went to a Fry's to look at the units in person, the fit and finish seemed a bit too Wal-Mart...but maybe I had already set my sights on the Polk, /shrug. I also have a little bit of prejudice against Sony home electronics for no apparent reason I can remember...
A quick check on amazon showed your Sony might be cheaper, though, being on a "put it in your cart to see the price" special, marked down from $299, while a comparable Polk system was $284.99, marked down from $399. There's definitely a better selection now than there used to be, and prices have dropped a little on the
one I had my eye on. You might consider that one if you already have a subwoofer, since its in the same price range as that Sony system (EDIT: If you're willing to buy a used one).