I have had several versions of the BlueAnt, not too pleased with the frequent pairing I had to perform (when I had BB devices, never used with Android). I then went to Jawbone, which was ok, the noise cancelling wasn't great (BB Bold, and Milestone).
I am using an LG HBM-810 Bluetooth Headset and Solar Speakerphone, it works great and is always charged on the solar dock. Amazon has them for $30, I paid $150. (Paired with Galaxy Infuse 4G)
http://www.amazon.com/LG-HBM-810-Blu.../dp/B004DS175M