I honestly think both Equilibrium and Turisas are fairly decent. Equilibrium don't sound like a typical viking metal indeed, but they've got great folk-ish compositions. Their instrumentals are pretty average indeed, but the tunes, musically, they rock. And Turisas...Turisas are just extremely catchy, energetic and even varied. I'd rather have a band that delivers something new with each song, than having one that can be completely labeled as one genre only, but it's pretty constant, with no surprise elements or so.