Just rcv'd the Sony 150 soundbar and set it up.. Didn't get a chance to play with it much but though I would share a couple of things... First off set-up is VERY simple and anyone can do it.. Adjusted the Sub and Treble so far.. I have OTA television and via optical there is no audio delay to speak of... Here is what I have:
Vizio Tv XVT37 Lcd: hooked up to SB via optical
Xbox360: hooked via hdmi to the SB
Sony Blu Ray: Hooked up via Hdmi to the Sb
Toshiba Laptop: Hooked up via Hdmi to the SB.. Have wireless keyboard for this..
Now I haven't listened to many sounbars and not a audiophile.. I previously owned a Yamaha YAS-71 soundbar that sounded ok... Problem with that unit is that the dialog was never really great... Servicable but that's it.. Sub was ok.. Overall sound was mediocre for music and a small frontal soundstage for movies... I was lucky to sell it to someone via craigslist..
Short game with NHL2012: Sound was pretty darn amazing imo... Before I would struggle to hear the background music IE arena organ or the PA announcer.. Not anymore.. What a difference.. When I check someone into the boards I hear a loud thump via sub

Passes stick to stick sound great.. Never really heard it loud...
Blu Ray: Dialog crystal clear, much wider soundstage... I only watched about 20 min of the Hangover 2... So I really can't comment too much but so far I am VERY HAPPY...
With that said, I was a tad hesitant about the Vizio 215 because I don't think my tv was "arc" compatible... Plus I'm sure they fixed some issues from the previous soundbar but didn't want to take a chance... I will post a review in a month or so when I can spend time with it and get a grasp of adjustments etc etc..