No Slackers -- love to hate; Sufferama -- just hate it. If I were to analyze why, it is because No Slackers builds upon my strengths while Sufferama shows up all of the dents in my wimpy armor.

That is, No Slackers has longer sets with bigger gears (ah, better hills) and when it does super spins they're shorter (ah, stomping up those little hills). I can handle that sprint-y stuff if it is short.

On the other hand Sufferama has these long (60 seconds) all-out spins. Blah...that's *hard*. I can't do it. I hate it. I don't see the immediate gain (heck, I don't race and I don't need to sprint). BUT....I know it is good for me because it pushes me out of my comfort zone.

So...to paraphrase Veronica....I never met a Spinervals that I didn't think was doing me some good. Whatever you end up with, it'll do you good.