I agree that overall Cedar Point is the best! I worked there one summer and it was the best summer of my life.
One park that does not get mentioned very often is Worlds of Fun in Kansas City, MO. I went there a few times when I was younger and had a blast, some great rides and a nice clean...
I though it was Great! Wrapped up a lot of questions for me even though it didn't answer all, and the emotional impact hit hard. A fitting end to one of my all-time fave shows!