There is now an objection UCLF6 - [Rom]~[UCLF6]~Team Perfection's ICS Objection|07/11|SGSIII|SVoice|Fast|Spiced|gr8Bat - xda-developers
but a lot of users are reporting a few bugs, so I'm holding off for now. The biggest things I loved about UCLF5 was the toggle's in the drop down menu, s-voice, AOSP launcher and general flow. Really tempted to flash back.
Just noticed there is an RC1 update coming for UCLF6; I may just flash when it hits