I am looking to switch to Sprint since Helio's phones do not allow bluetooth tethering and was wondering what phone would be best for the n770. I'd like to be able to hop online whenever and 3G coverage is awesome here in Tucson but I've seen alot of posts with people having problems tethering their phones.

Edit: Preferably something fairly small, I'll already be carrying the 770 around, I just want something that will stay in my pocket and pretty much act like a gateway.