Of the pictures so far, I think that Logan looks by far the best, sir. He's crisp, and neatly painted [never a bad thing!]. However, his armour does looks a like it could use an edge highlight or two. I would also recommend thinning your paints a bit...
My only real issue with the other models is that they seem to be a darker shade of grey than Logan - is this intentional, or down to camera issues, or are you just trying out a few shades before settling on one in particular? I only ask because I always find that nailing a colour scheme early really adds to the look of your army as a whole piece.
The Thunderwolves are looking great so far - can't wait to see them finished, along with some pictures of this Fortress of yours!