My big question about Winslow - can he legitimately play NBA SG? IF he can, he might be the best player on the board at 4. If he's too slow and not quick enough laterally to guard opposing SG, our starting lineup may potentially include guys at SG (Winslow), SF (Melo) and PF (Monroe) who are too slow to cover the guys at their own positions.
Some of you guys say defense is a thing guys can learn - I really think it comes down to quickness, strength, feel for the game and desire. Some of those things you can work on, some are just innate traits - I don't think many guys can really "improve" their quickness or explosiveness, not to the level that some athletes are just born with. Winslow is explosive. Is he quick on D? It was hard to tell given where Duke had him on the floor, for me, at least. (Not to repeat myself again and again, but this is why I like Stein - he has cat-like quickness you cannot teach. his ability to cover the pick and roll and patrol the middle and close out on shooters... I feel like he could improve our points allowed by 10ppg all by himself...)
I do like Winslow a lot - I just don't know whether he's a true SG or more of a "wing" 3 or something. I think he's going to be quite good though. As I've said, I could see him being a star for a team like the Spurs, which is a high compliment in my mind.