rnrc is one of our top favorites at Disney (along with tot and ee). I don’t like sm. Rnrc is rough but if you keep your head back it’s fine. Sm is horrible. Jerks me around way too much and just uncomfortable all around. I don’t enjoy riding it at all. Every once in a while I’ll try it again thinking it’s not as bad as I remember, and after our trip in March, it’s just as bad (if not worse as I’m getting a little older).