Millennium Force. The drop is the only great part of the ride, and it doesn't even land in my top five favorite drops. The ride that is supposedly one of the best in the world barely breaks into my top 10, and I doubt it's even top 100 in the world. The airtime is weak floater at best, it has an annoying rattle, and worst of all, it is utterly forceless. Many rave about the forcefulness of the overbanks, yet I found Woodstock Express to have better positive Gs at times. Also, the design itself is pretty weak. It is very repetitive and there are too many sections of flat track.
El Toro is my number six, but that's it. I find multiple parts of the layout to be quite rough, and despite the amazing airtime on the first drop, following two hills, and the Rolling Thunder Hill, the rest is lacking a bit. The pacing at the end is awful as it kind of dies after the RT Hill. The final transitions are sluggish and rough and the train struggles to crawl over last couple hills. My biggest complaint is the roughness on the turnaround as it leaves me with a headache every time I ride. It does still rank well for me because the airtime is absolutely mental (not on the level of Skyrush though).