Why not just get the gp4000's (or 5000's now)? That's what I did. Best balance of all these, in my opinion.

Gatorskins have a poor reputation for grip in the wet. Whereas the gp4000's have the best grip in the wet I've had on a tire. (Not as good as in the dry but a lot better than what I had tried before). 4 seasons seems like they're more like "cold weather" formulated being not as good when it's warm but better when it gets closer to freezing.