Work has stopped paying for my cell phone. I would like to know which provider is the easiest to tether via USB or blue tooth? I am currently running RR & DXF. I would also like to setup blue tooth for phone control thru RR as well. I have searched, but this kind of info just dose not jump out at me. This will be a first for me, so going with the right provider & phone from the get go would be half the battle won. THANKS.