My favorite Wolvie is also the wave 68, Giant Sized X-Men version. Iconic Wolvie, terrific design, mostly clean tampos, and whether it was by design or just wishful thinking, he seems to have a Dave Cockrum styled mouth that I appreciate. I echo Padrino, in that this may be my favorite wave of any Minimates ever. Iconic representations of classic comic characters in one of my favorite comic runs with bold, basic colors. Just everything I want from Minimates.
My second favorite is the TRU wave 22 Wolvie. And I think part of the reason actually is the slip on mask/helmet deal. I had the Secret Invasion one, and used a wash to highlight the paint details that were lacking on the production figure, but it still looks a bit clunky. The control they had over the TRU 22 version made it look so damn good.
The thing that saddens me is that we never had a brown Wolverine that could match up with the greatness of those figures, or the wave 22 or Greatest Hits figures (both really good, by the way, but I'm not as keen on the colors, and eye placement on the wave 22 version). Wave 47 was OK, and before that I cobbled together one using parts from Daken and another brown Wolvie, but this is my favorite design of my favorite Marvel character.
I think Tactical Wolverine passed me by completely somehow, so I'm thinking I need to pick that guy up.