I use a bluetooth headset with my V600. I have the HS820 from Motorola; this is the little one that fits over the ear.
1. I am amazed that the thing works at all. It is always a pleasant surprise when anything does.
2. Pretty comfortable
3. Minimal "Borg" effect but you do get approached alot about it.
4. Insufficient volume for loud locations. Not recommended for use in an automobile; I prefer an FM holder from CCM.
5. The battery is the best part.
6. Also, the voice activated dialing works great. I have had the blue trek, jabra and one other that I do not recall. The Motorola is the best of the lot.
Maybe my ears are shaped funny but the only headset that I thought was OK from a volume perspective was the Jabra but it did not work very well as a bluetooth unit. I will stick with the Motorola. Get one from eBay. There was a guy selling them for less than $50.00