If you want to have a lite ROM and install your own programs to internal storage I would recommend indagrooves "SimpleROM".
If you like more programs preinstalled then try any others. They are all relatively stable (remember, 6.5 is still beta) so you can't go too wrong with any of them.
Of course, learning to make your own using Calc's Kitchens is a LOT of fun too!
EDIT: Is Shak's ROM a CDMA Diamond ROM??? You may be in the wrong forum.