The major problem with XT is the fact that to get it to run on your TP2 you have to:
1) Pull the case off
2) Take the back off
3) Pull the MicroSD card that has your programs installed on it
4) Insert the XT card (Don't misplace your other card)
5) Put the back cover on
6) Put the case on
And after you get where you are going, then you have to reverse it to replace your own SC card. If they would put it on a 16 or 32gb card it would be fine, but the biggest (At least when I bought it) was 4gb. I have over 8gbs of music on my card, not to mention the cabs to just about everything I have installed or installed at one time or the other on my 16gb card. I know there is a Hack to make it work on your bigger card, but dang I lost that email that had step by step instructions.
Someday I will find the instructions again and put it on my new 32gb card, but until then I will keep using Igo8.