I really like Sorokin. I think he can become an elite goalie, and there's no one blocking his way on the Islanders. Demko is another really good prospect but the Canucks are in need of a rebuild but they refuse to do so, so I'm not sure I like his situation too much. Gillies amd Stolarz are in good situation as well but I don't see that elite upside in them.
Pickard is clearly closest to being that #1 goalie but I can't really figure out his upside. I think he can be a #1 goalie but I'm not sure if he would be just an average starter.