Be sure to do Full Wipe before flashing new roms.
I am currently using ILWT CM7 and love it. No big problems whatsoever. If your looking for a good AOSP rom, I recommend G-Lite. If you want Features, go with ILWT CM7. If you want the Latest and Greatest, I recommend Slim Bean or CM 10.1 by Flinny. If you want a good balance between Performance and Newer Android Platform, I say Mimicry.