I don't know, somehow Severstal doing well didn't surprise me. They started the season pretty OK, play the same boring albeit hard working style and have a very potent 1st line. A lot of teams achieved moderate success with this recipe.
Neftekhimik as well, they are doing great but as you look at their roster you can see where is it all coming from.
Spartak, however, really surprises me. Even though I said myself that it's not a bad team before the season but after they started it horribly and made so many changes, their success is something I didn't see coming.
Regarding Amur, it's lovely they are relevant but I think it's gonna end as soon as they start playing away from home again. They played 8 out of their last 12 games home so they are close.
Overall, however, I do agree, it's a great season. Other than SKA.