Just noticed this thread, so I wanted to comment. I went to Magic Mountain last August and I absolutely had a blast. Well, it was extremely hot that day but I still had a fun time nonetheless. The previous 2 weeks leading up to my trip, X2 had been marked as closed due to a broken part so I was extremely worried that it wouldn't be operating when I went. Luckily it was fixed in time for my visit and I got to ride 3 times. It's such an outstanding and thrilling experience, there's nothing else like it (in the USA anyway, lol). It became my #1 favorite roller coaster after the first ride. Full Throttle was also a pleasant surprise for me. I wasn't expecting that much since it's such a short ride, but it packed a punch. The hangtime at the top of the loop was, again, unlike anything I've ever experienced before. The sensation of hanging above the whole park upside-down was insane. Some of my other favorites from that day were Ninja, Twisted Colossus, Tatsu, and Goliath. Viper on the other hand... let's just say I needed some Tylenol after that.
It was the second Six Flags park I'd been to after Great Adventure, and I do think it was a better park due to its size and ride lineup. Great Adventure isn't a bad park mind you. After all, I love Kingda Ka, El Toro, Nitro, and Bizarro.