One issue that comes up for me a lot (with a RestTalking OU Cresselia) is what to do when the best move is actually Rest, and the other two moves (attacks) are both better than nothing, but not as good as Rest. (If I'm in a situation where the opponent can 4HKO my Cresselia but can't 3HKO, and the opponent has a sleeping move, if I can Rest I can get the timings right for the rest of the battle, and gradually wear the opponent down.) The issue there is that Sleep Talk selecting Rest, of course, does nothing as Rest doesn't work while asleep; so is it best then to choose Sleep Talk if I have no chance of waking up, and Rest otherwise, or do I choose Sleep Talk on the first turn I might wake up and Rest after that?