I think the main one for me is Tornado @ Bakken. This ride has OTSR (which dig heavily into my shoulders as I am on the taller side), is a spinning coaster and has the roughest transitions (layout-wise) I ever experienced. Those are all things, that usually deter me from really enjoying a rollercoaster; especially the spinning, as I get sick quite easily.
Still, I absolutely adore this ride. The sheer insanity of it, the intensity in some of its turns, the fact that the spinning is not controlled. It can spin so fast, that you literally will have trouble breathing. Damn, this thing should not exist, and I love it for that. It has a f*****g launched chain-lift!
Oh, and it also has a Boost mode that they actually allow people to ride. If you ever wondered who in the right mind designed I305 and thought "yeah, that looks good" - it is likely the same guy who designed Tornado.
I was able to ride it 8 times during my first visit (the park limits you to 10 rides per ride, and it broke down 30 minutes before park closure, just as we found the optimal seating configuration to spin faster than some washing machines. And have my upper body was covered in bruises ranging in colour from green to blue to purple. Didn't even know that my body would be able to create so many different colours.