In my opinion, Face/Off is one of the scarrier rides. It's just the lift when you're facing the ground. It goes up so slow and you just sit an hope that you're restraint doesn't fly up and you fall that hundred some feet to the ground.
However, I disagree with Drop Zone. That's one of my favorites and I actually wasn't even scared the first time I rode it. I actually had to force my dad on it, who was pumped to ride....until we were about 1 or 2 groups back Where you can kinda start to really see the height and feel the wind. I try to ride Drop Zone at least twice a trip and that's two times a year.
As for Firehawk, the only parts of the ride that really freak me out are the initial roll, and the loop. It's kinda freaky when you go from staring at the sky to suddenly staring at the ground hundreds of feet in the air. The loop just scares me because when you go ino the loop if you're in the back or front It's kinda wierd looking at the opposite end of the train. Plus it's not exactly that easy to tell where you are in the loop because you can only see the opposite side of the track.