I was in the same boat. Loved Cam, unsure on Kaep. They are certainly the best two quarterbacks to come out that season. But remember, Kaep has only started 10 or 11 games (I think that may haunt him in the big game tonight). He could certainly hit that sophomore slump once teams figure him out a bit.
Sorry if my comment hijacks this into a EJ Manuel thread, but Manuel has been a guy labeled as a "breakout candidate" the last two years in college and it never materialized. Inconsistent thrower, comes up small in big games, and he is a capable but not dynamic runner. I just don't see it breaking out in the NFL when it never did in college.