bad coasters

hello, what is a good/fantastic ride on a coaster that you strongly dislike or even hate?

I was wondering, out of all the coasters and coaster types that I've ridden, which ones do I hate the most? I hated riding Mean Streak, but not as much as Vortex at KI. I'm not a big fan of Vekoma Boomerangs, but I hate Arrow Loopers too. It's a hard choice for me. Mean Streak is already torn...