Every ROM has their own little tweaks. Some you will like, some you till not. That question is IMPOSSIBLE to answer, and its not fair to the chefs. All I can tell you is read around, look at all of them, most importantly read the user reviews after they download them, and make your decision.
Use the hard-SPL form here:
http://forum.ppcgeeks.com/showthread.php?t=35839
Instructions are in the thread. Once you Hard-SPL you can install any ROM you like