Bluetruth
http://www.bluetruth.com/
Q: Why are they so good?
A: They have clips of audio tests made with each headset!
(i.e. In car, walking & in quiet areas)
You'll get to hear what stands up to wind noise, sound quality & consistency & volume.
If you looking to buy a BT headset and want to hear what it's like before buying, visit here. You will regret not taking advantage.
They have pretty good prices IMHO. But the wowing part is the tests, the test clips are a godsend & I love them for taking the time to do this.