[aj48198]

ATM, based on what you have mentioned and whats available by your carrier, the TP2 is your best option. The thing that you have to be aware of is according to everything that you looking into doing on your phone, it sounds like you will be constantly connected to the internet, which will kill your battery, so carry a spare or two. If its possible, you could always change carriers, go with T-Mobile to get the HD2 which could help with processing everything, giving you fewer lock ups and resets. Nothing could be more embarrassing than having your phone lock up while processing someone's credit card. Its still giving you the WM features that you are use to along with more processing power. Plus you wouldn't need to have the lappy. Besides that, you have the right phone to complete the job if you plan on staying with your current carrier.