Hmm, this group is tough. The only one of these that I have ridden is Stunt Fall, and although it is great I'm not sure it is good enough to get my vote.
Colossos gets my first vote, Intamin pre-fab woodies are great coasters and Colossos doesn't look to be any different. Then after a bit of thought it is going to be Hyper Coaster for my second vote.