new to htc hd2 tmobile!!!

[tech]

well im not new to this site i had mainly sprint phones first time with tmobile atm i use andoid on evo and now back to wm testing it out but one major down side tmobile 3g blows slower then sprint but the phone is awsome i love it i do have 20 days to deice to keep it or not time for some modyfications small one but stock wise i will not unlock until i decide. so i have a question what do yall recomend me to do on stock wize?