I have tried cm11 but am missing a few features I was looking forward to (that I used to have on cm10 on my SGS) like screeshots, but I know its just the beginning and I haven't used it long enough yet.
I have a question though: on stock ROM, using the button on a standard wired headset won't do anything. It's usually linked to play/pause/skip and more depending on patterns. I thought I would get this king of behavior back in CM but no luck. Are there any ROM supporting this kind of input? Seems like a fairly basic functionality to me.