HS850 vs HS80??? Any BT 2.0 Headsets available?

I'm trying to decide on which one of these two BT headsets to purchase
to use with a V330. The V330 is said to be BT 2.0 compliant, yet both of
these headsets support only BT 1.2 (I believe).

Two question for the group:

1) What if any differences are there between these two Motorola BT headsets?

2) Are there any BT 2.0 headsets currently available that will work with
the V330?

Thanks!
SFB