I've tried the following headsets with my 7290:
Logitech Feedom Headset
My personal favorite is the HS810. I love how it folds up when not in use. I carry it in my pocket all the time. Very quick and easy to slip on over the ear. I think the HS850 is similar.
My next choice is the Jabra 250. I wasn't too impressed with the other two..especially with the Plantronics M2500. It didn't seem to have any noice cancellation in it...it was VERY noisy!