Bionix 1.3.1 with overstock kernel. based on Froyo unfortunately. Definitely runs faster than the stock. Also have GoLauncher on there. These are the only ones I have tried so far.
To note, I lost a lot after flashing. I had a backup with TitaniumBackup but the restore did not restore everything properly. Some restored apps were shown as not installed, some games lost progress etc. Nothing too bad though.
Another thing to install is the voodoo fix. Not sure what exactly its called but it improves speed, sound and some other things.
BTW GPS might stop working. I need to look into how to maybe fix that after rooting