Salvia is supposed to be much more intense than most hallucinagens (if not all) and unlike salvia a lot of people seem to wan't to do acid again, while many who've tried salvia aren't jumping with glee to try it again.

I wouldn't worry, I hear too many good things about LSD, just think positive, if you start to get a bad trip say "FUCK THAT!" and start thinking positive, every trip I've heard of says you can completely control your trip, just think good thoughts.