i was basing it off of ppls 'own' phone.. not doing it to others' phones.. and ****, even Tmo Tech support will give u lame tech support (aka factory reset).. so they can only do so much.. XDA will actually fix problems (eg. SGS file system fix aka lag fix), and make your phone better.. only problems you'll run into is if those roms are still in beta.. root is only root.. doesn't mess up the phone in anyways.. mainly allows u to use apps the require root, like Titanium backup, and Shootme (screenshots).