It was the corkscrew, then millennium force, then maverick..... But now the steel vengeance blows everything else out of the water. That shit is I. N. S. A. N. E... . Ever gone upside down in a wooden roller coaster? Shit is bananas.
Also the entire tunnel in part of a 100yd section of the line is filled with giant spiders continuously crawling and dropping down. Adds to the fear factor.