I really wish I had T-Mobile in my area
They're actually pushing for new, cool features. It seems like all other big companies are doing what they can to stagnate the market because they already have the major market shares. I just want to support you, T-Mo! Why don't you want my money!?
All that said, I have Aio (Cricket now) and I've been more than pleased with them. Just want the option of T-Mo and give em a whirl...
I have no idea on the answer to your question though. Enjoy a free bump instead!