Should I go to Comic con or this New Jersey convention?

Hey, so as you can tell by my question i'm trying to decide if i should go to comic con or a new jersey convention. Comic con is obviously going to be A LOT harder to get into, so i am more likely to get into the new jersey convention. However the one is NJ only has the Supernatural cast (mind you one of the major reasons i am going to comic con is for the supernatural cast). Also comic con doesn't guarantee a seat, but the NJ convention can guarantee me a seat for three days.

So I figured I should go to the Nj convention, but then I thought about how much bigger and cooler comic con is! Also comic con has writing sessions and other casts that I want to go and see. So now I think I should hold off on the NJ convention and go to comic con instead! HELP!!