Hell Hath No Fury is a damn excellent, really hard, good intervals, make you wanna puke workout.

I own almost all the Spinerval vids, and about 10 or 12 of the CTS videos. I like Sufferfest MUCH better. I like the cycling videos they have with the workouts, and the workouts are just killer. Good thing, there's about the same price as all the others. I also know they just added another 30 minute TT video, if that's your thing.

I really dont think you'll be sorry!!