Top Thrill Dragster I believe is 420 feet. Kingda Ka is 456 feet.

It's literally a taller version of Top Thrill with a camel hump to ride over and a slightly faster launch speed. If it was anything really new I would have already taken a ride on it :-\

Id be first in line for the 500 foot one. As long as it's a pneumatically launched ride. I would fucking DIE if i had to take a cable lift up to that height.

Cedar point was the first park to break 200 feet with Magnum xl, first to break 300 feet with Millenium Force, and first to break 400 feet with Top Thrill. They will be first for 500 feet.