I remember riding WDW's Space Mountian when I was about 7 and being scared to death!
After that the next coaster I remember riding was BTMR at WDW after about age 12 or so I started to enjoy coasters.
I'd have to say the closest ones to me are SFGAdv and Dorney Park.
However after spending 20 years in Orlando before making my escape I claim my home parks as the Florida one's since I spent the better part of my young haunting them before I worked for them