[tank001]

Is your touch pro a cdma or a gsm because they use different radios and are not interchangable.
All cdma touch pro radio's are interchangable with cdma touch pro's only and all gsm touch pro radios are interchangable with gsm touch pro's only.

That being said start flashing different ones to see which gives you the best signal to battery life, the carrier's that they came from doesn't matter (example I am on alltel and have the best signal and battery life with the radio from the telus touch pro)