I'm usually not a big fan of solo Wolverine stories because his popularity has made him chronically overexposed, and I think that anti-hero types generally work better when they've got some other similar but different types to rub up against. Logan by himself is just a surly, homicidal Canadian with a bad haircut, but Wolverine with the X-Men is a guy fighting for a cause with his difference in tactics making for interesting internal conflicts. 
 However, this kinda works because Wolverine is a mutant, a member of the X-Men, and also an Avenger. (And just making jokes about his busy schedule doesn't really explain that away, Marvel.) That gives him a unique perspective to this whole storyline with the government passing a law that makes any superhuman who doesn't register and work for them a criminal. You'd think this would freak out the mutants since it's precisely that kind of thing they've always feared, but since the House of M event has decimated their ranks the X-Men are just hoping to lay low on this one. 
 But Wolverine is determined to find Nitro, the supervillain who made everything go KERBOOM and led to the whole mess, and he isn't letting anyone tell him he can't do that. This puts him on a trail that leads to some interesting conflicts and alliances as well as the discovery that Nitro isn't the only one who has things to answer for. 
 From a writing standpoint I was pleasantly surprised by this one because at first it seemed like reheated Frank Miller-style dialogue, but there's actually some interesting stuff done with Wolverine's personal code that incorporates both a sense of honor and a willingness to kill that is called into question when he's clashing with his fellow X-Men and the authorities. 
 The bad thing with this is the artwork which I absolutely hated. Wolverine and others look like monsters on steroids, and the artist has a thing for drawing huge open mouths that show more teeth than John Elway. Ick. I nearly dropped it to 2 stars just for that alone, but I ended up liking the story enough to keep it at 3.