Sufferfest is fun and their music is awesome. I like their attitude.

Spinervals is boring as hell and their music sucks.

I have some Spinervals for a while; a few years. I demo'd a Sufferfest vid once and that was it, no more Spinvervals for me. We bought the whole set for DH and I. They aren't "easy" but as always you can set your own pace if you need to.