Where are they located? Are they coasters or free-falls? They must be new, since a few years ago, the largest drop on a coaster was like 2xx feet, but the largest freefall was in Six Flags, Anaheim, and was called Superman, which is like 4xx feet high.
Yeah, Paramounts Kings Island, the home of The Son of Beast that Sov mentioned, is in visible range if I stand on my roof to see over a little tree line.
I've been to King's Island countless numbers of times. My friend rode every ride and only puked on one of them... the freaking Spongebob 3D adventure! Needless to say, I was LMAOing.
Cedar Point is the only place to go for roller coasters. And Millenium Force, is by far the best ride. Also be sure that you sit in the front, that is what makes it number 1.