TTD's a fun ride, but certainly not more fun than 2 new-to-you parks full of coasters. Although I've never ridden them, I bet you'd have more fun with Alpengeist, Apollo's Chariot, and Volcano than just TTD, nevermind the 15 or so other new coasters.
"Find yourself a dream and, when you find it, chase it like a bull chasing a rodeo clown; don't give that clown an inch, not one inch" -Sean Kelly
