Which are the best bluetooth headsets to go with Nokia phones, especially the 6310i and 8910i ?

I've been considering the Nokia HDW-2.

What are other people using?

By the way, does anybody know why Nokia didn't allow for Bluetooth headsets to be used with the Nokia 7650, which is a bluetooth enabled phone?

Thanks

The 7650 only supports data profiles (File Transfer (OPEX Object Push) and BT Serial Port), not the two audio profiles - Headset and Handsfree.

My mate has the nokia HDW-2 with the t68i, it works great, and it's pretty comfortable, and the sound is great. The best one IMO though, is the Jabra one, it's the lightest and most comfortable. But it's not compatiable with the 3650 ATM. But they're releasing a compatible one next month.