My first was the one at SFDL. I can't think of the name of it right off. I had never been on one before and I was actually looking forward to it. Of course, when I remembered it was Vekoma, I saw the logo on the trains, I had second thoughts. Overall, it wasn't bad. Granted that I didn't do it a second time though...
A few days later, I did the one at SFO and it killed my head. I had a headache the rest of the day! Believe it or not, I thought Serial Thriller was a lot better and I can't stand SLCs.
Max