I'm gonna go with Superman, at SFOG. At SFGAdv, it was horrible. I would say that Volares are better than the SFGAdv Superman. What makes SFOG Superman special is that is seems stays close to the ground. There were multiple moments when I felt as though the ground was inches away. It was also the first of B&M flyers I have ridden so it was a special experience to me. I felt as though I was really flying. No other ride had given me that feeling at the time. Batman is certainly a better ride, but my ride on Superman that day was a bit more special.
Plus, Pretzel Loop <3