I think Curry will win but I think Harden deserves it, even though I like Curry a lot better as a player.
Curry has substantially better teammates to begin with and many of the guys Harden did have had significant injury issues (Howard, T Jones, Beverly, Motiejunas now, probably missing some). To lead that team to the 2 seed with a decimated front court and a hole at PG is a more remarkable achievement than what Curry did in GS in my opinion.
If I had to predict the top 5 (actual votes, not what I want), I think I expect it to go:
Curry
Harden
Westbrook
LeBron
A Davis
EDIT: Switched LeBron/Westbrook