We live in central New York and are planning a trip to Cedar Point in Sandusky, Ohio, at the end of June. We have time to go to one more park on this trip. We've already been to King's Island in Cincinatti, and are thinking of going to either Holiday World in Indiana or Michigan's Adventure. Has anyone been to both these parks? Are they worth going to? I've always wanted to ride on Shivering Timbers, so if anyone has been on it and can give a review, I'd really appreciate it. Thanks.