I voted "Other" just because there isn't one good answer. Floorless coasters and inverts really require you to sit up front; otherwise the effect of the ride is lost on you. El Toro on the other hand gives MASSIVE airtime in the back, to the point where you don't even need a seat half the ride, Medusa East has awesome hang time in the back, and Superman SFNE is great no matter where you sit. So it doesn't really have a definite answer. I guess in general I would say the back is better, but that is by no means all-inclusive of every coaster ever.