Root best firmware so far?

hello, i recently flashed from 2.2.1 to 2.3.2 JV1 -- but it crashes frequently and i have to reboot, also twitter application crash and GO Launcher too.

so, whats a good firmware to flash? or a good ROM?

edit: also I have the i9000T, but i have been using i9000 firmware with it. should i use i9000T firmwares or it wont give me any issues? if so, what region is i9000T on, America&Australia?

thanks :)