How to use A2DP bluetooth headsets.

[Raging Idiot]

Add another vote to HT820 = ass-in-a-can.

Not sure what other headsets sound like, so I can't really compare.

Also, I find the quality tolerable, but I don't use it much at all. The headset is too bulky in my opinion.
Some have had luck getting better quality changing various registry settings.

However, if you want a more low tech solution you could also hold the headphones tighter to your ear. It actually improves it by a noticable margin.