"Great sound quality, very discrete & comfortable."4.0 starson by Willie Snyder
Pros: Sound quality
Doesn't make you look like a dweeb
Improved talk capabilities (over the 903)
Cons: Battery life could be better
These are a little heavier than the old 903
Controls not quite as intuitive as the old 903
Summary: All in all, these are the best bluetooth headphones on the market for listening to music or books. I have these plugged into my head at least 5 hours a day listening to music or books through my Droid while I'm at work. The sound is clear as a bell, the battery lasts about 7 hours (of constant playback...days and days on standby).
I have an old pair of 903s as a backup, and this version is a step forward from those (especially if you want to actually talk to people using the microphone...the 903+ is much improved in those regards). These seem better constructed, but weigh a bit more as a tradeoff (my old pair made it through a washing and drying cycle though, and still works like a charm).
I've had other headsets that hang off your ears like something you'd use to contact aliens, and the 903s are barely visible if you have longer hair like mine.
Highly recommended, and I'll be purchasing another set as soon as I wear these out.