CleanRom ULE is fast and usable, there are new updates often with performance upgrades targeted. This is out of the box the fastest and smoothest TF700T experience I've seen or tried. I encourage every unlocked infinity owner to try it. You will need to flash .30/JB then a new recovery, make sure to nvflash if you are pre .30 prior.
Some Bugs and warnings:
- Don't change "Performance Mode" while utilizing flash -- certain to crash and reboot (a very similar issue to the TF201)
XDA Discussion: http://forum.xda-developers.com/showthread.php?s=75ad3f9a01ac5914e138e04742f726bd&t=1919851
Scott's TF700T Roms: TF700 ROMs