I have Cingular/ATT, for "unlimited" bluetooth connection while I am driving etc which data plan should I pick. This device isn't a PDA and its certainly not a notebook so it is unclear as to which plan one needs to pick. Obviously I'd prefer the PDA unlimited, but even at $40/month its not easy on the wallet but certainly easier to do than $60 for the laptop data connect which is all on top of VOICE service