El Toro is the most intense ride I have ever been on. It means the Bull in English, and the name fits perfectly because the ride whips you around so much
Kingda Ka is pretty intense but El Toro >>>>>
I haven't been on Kingda Ka but El Toro was NOT that scary.
Phantom's Revenge was the first rollercoaster I ever rode, and it's safe to say that it ruined my life. Seriously. I was terrified of heights and my dumbass, at age 11/12, was talked into riding it. Ugh. The 3-5 seconds where you're sitting at the top looking over the edge are terrifying. I've been on the Top Thrill Dragster as well. It was alright, just ****ing scary.
I think the most thrilling rollercoaster I went on was that one at California Adventure, I think it was called California Screamin'. I'm not really a ride person, but it was fun.