Tiamat 4.0.2 was really great on n76, 78 and 80. I typically used smartass and battery life was above average. Performance was excellent, best I've had FPSe run. Once Tiamat merges agraben's newest Poonkang commits, I'll be going back to it. Cameras, GPS etc were all functional, but I still had the very minor 4g on at startup bug. No surprise there.
Keep in mind though, my highest priority is always the HDMI EDID fix, as my Westinghouse TV is 3 years old and needs it! I won't keep any kernel that won't mirror to it. So, since HDMI mirroring has been out, my kernel testing has been limited. Also, I don't do benchmarks as I feel the time wasted doing all of them would be better spent using the phone practically and seeing how it feels. :]