Many. Any kernel which is AOSP compatible should work. Read the first page of the thread devoted to the particular kernel to find that out. Kernel recommendations are the same as rom recommendations here; I.E nada, because they're purely subjective (you won't have the same experience of a particular kernel as me/someone else).
If it's important enough to cause you grief if it's lost, back it up. No excuses
Trolling for thanks is lame
Does Samsung's auto-brightness implementation crap drive you to self-harm ? A solution !
Most retarded thread on XDA in 2013