I flashed Synergy r420 yesterday and I like it very much. It is close to stock but it brings features we should have gotten with BJ 4.1.2 update like multi-window, Note2 video camera and gallery, 4.1.2 camera and some other nice touches. It even comes with ziggy kernel so you can overclock. It seems very stable with one exception. Every time I open my comcast email it crashed back to home screen. This could be due to the fact that I did a dirty flash. If thats the only problem. I'll take it because I didn't feel like doing a complete wipe; I did clear cache/delvik.
I'm still rocking AOKP build 5, and I switch up to liquid smooth every few days Lol. Just waiting on the reboots to end on the 3.4 kernel Lol
Samsung Galaxy SIII