Dude, that's one of the biggest necro posts I've seen in a while. Not cool.

I did "lots" of research on all this a while back, & came to the conclusion that.
The best out there SQ-wise, if you also need it to be quite sturdy, is the MM100.*
It may have a slightly different name now, but it should def. be on your short-list.
The mic isn't the best, only "acceptable", but SQ is very good for BT portable.

Sennheiser, it's supra-aural form-factor, muffles outside noise a bit, but is mostly open.
A good thing, esp. if you're exercising in public spaces...
Doesn't leech heaps of noise either, if you had it to max in a bus it may annoy others.