A couple of weeks ago I reviewed the Jabra Move and found it pretty good...a little too bass heavy for me, but pretty good for those who like some thump. The headphones mostly interested me because they came from Jabra, a company best known for both corporate and consumer telephone headsets.

That same curiosity had me contacting Plantronics for a similarly price headphone, the BackBeat 500. I've been more impressed with these products than I expected, but I think they're going to have to keep working on it to beat the likes of Sennheiser. Let's check 'em out.

Dan D'Agostino: I took the best parts of the Momentum's more sophisticated and complex circuitry and put them in the Progression, without using the same high parts count. Each stage of the Momentum's gain amplifier is separate, with input stage and driver stages on separate rails. All of the Momentum's devices are designed for maximum performance in a small package, which requires a lot more of them, and a significantly bigger input card than the Progression's. These differences create subtleties, because I'm able to run much higher current in the Momentum's front end.