i went when i was on a band trip...Universal was pretty friggin awesome. my favorite parts were the "return of the mummy" ride , the "Terminator" 3d film thing, and (absolute best) House of Horrors, the first room had every chuckie doll ever used, it was epic...ive never been to 6flags, but thats prob b/c i live like 30mins away and it doesnt seem so appealing with the haunted house fire that burned 5 teens alive in 94 and the annual deaths that occur there....go to universal