I choose Wisdom Form. While Final Form is awesome, a properly used and fine tuned Wisdom form can be just as deadly. In addition, the fact that he Keyblade acts more like a "Magic Gun" in this form allows you to fight at l a distance without using spells. This makes it easier to heal and escape, or to just be cheap when fighting close ranger fighters who don't cover a lot of ground really really quickly.
Not much needs to be said about Final Form, or Anti-Form for that matter.
Master form is okay, but it gets over shadowed by Final form rather quickly. It also makes it difficult to hit enemies who stick close to the ground.
Unfortunately for Valor form, I'm a magic user when it comes to RPGs. That being said, Valor form is my least favorite form out of the bunch since you can't use magic. It's also, in my opinion, the most vulnerable because of this hinderance.
I've seen Limit form in action on youtube, and I gotta say that it looks friggin sweet. I like how you get all your old abilities back form KH1. On top of it all you get HP back for each an every blow you land on the opponent when using your special attacks. If KH2:FM+ was brought to America, i think Limit might've been my favorite form.
