So far, SJ4 is a great little sleeper. He will sleep in his bassinet, in his crib, in his car seat, and just about anywhere! The best thing is that I've put him down several times when he was awake, and he will fall asleep on his own in the bassinet or crib (unless he loses that dreaded paci before he falls asleep). Then, he stays asleep for a good three to four hours. I'm trying to break him in early and let him sleep in his bed so that it won't be a big transition when he's a little older. Fingers crossed that he'll remain a great sleeper as he moves out of the sleepy newborn phase!