i am thinking about getting a plantronics 640 anybody here have one let me know how it works
i have a bb 7100g with suncom service

I am not familar with the plantronics 640 performance, however, I have a Motorola HS850 that works great with my 7100t.

search for "plantronics 640"

Wow. I did a search on "plantronics 640" and found a lot of folks who like it here. I think I may have to get one!

I like mine but often in the car it's too sensitive to outside noise. It's very comfortable and easy to use. I can keep it on for several hours and even forget that it's there.