Here is the thread which I am testing things and below is the report.
[08.09.2012] CM10 JB 4.1.1 Hercules - T-Mobile Galaxy S II Development - RootzWiki
24 hours of use:
Pros:
1. Project buttery (fast snappy) and omg it is like my Nexus 7 fast and all buttery.
2. Battery life I went 12 hours with only 10 percent of use that was minimal battery use because for 6 of the hours I was sleeping for the other 6 it was phone calls, texts, facebook and email
3. Fast app lunching fast app closing, fast browsing and very minimal lagg on the pinch to zoom
4. For a rom that is unofficial it is good as a daily driver I think - have not gotten any random reboots - no echo on phone calls - one force close of dps manager when I was messing with NFC but other than that nothing.
Cons:
1. Big con - google now does not work with voice the mic is not being utalized by the kernel soooo you have no voice on google now and shazam. (Have not tested skype just yet)
2. I have to say camera is still wonchy but with the darkside venom kernel it works. It takes fine pictures but still when the auto focus is going sometime it will flash green tint or white milky tint on the window for milisecond.
3. GPS seems to take a little bit longer to connect but it does connect and it is stable so just a slight delay on that.
4. Youtube app seems to be a bit problematic because when the signal is toggled between regular 3g and the HPAA+ signal the video just stops even though it has plenty of buffer but I think that is because of the GAPPS version I have.
5. Facebook contact sync - forget about it. Just flat out does not work
6. Camcorder (video recording) forget about it just does not work (known issue and it will be resolved).
Other than these I really cannot find any problem with the rom - It works a whole lot better than ICS and if battery life is a must for anyone this rom seems to have gold oozing out of the battery. If you can live with some of the shortcomings such as no voice on shazam and google now you would be a pretty happy individual. I have read that the green tint on the camera has been fixed on the newer builds but it really does not matter because the photo does not have green tint on it. Camcorder is a known issue and as far as I know it is being worked on.
I will post another update as time goes on but this rom is definitely going to stay on my phone for a while!