I really enjoy the entire park at Alafia. I voted for Rollercoaster since it's the one trail (loop?) that I can actually just drop the hammer, and turn it on. The technical sections keep me on my toes, but it's not anything that makes you think... "Oh my gawd I'm gonna die". The new section absolutely ROCKS! I rode it today for the first time, and had to double back and ride it a second time to ride it clean. There are other parts of Alafia that I enjoy as much... but, start to finish, RC is my favorite.
I have not ridden Boyette, or Croom... but, I am sure Ridgeline will be right up at the top, once I get out on it.