Mostly Goofy for me. My party usually consisted of me, Donald and the world person...unless I was in that bloody underwater one. Now there's a world that should be nuked.
From things I've read Atlantica is gonna be in the new game (KILL!!!!) and Donald and Goofy are much more reliable and don't die as often as they used to...maybe Goofy will actually attack as well instead of hiding under his shield...
Edit:
Just found a list of voice actors thought to be doing the voices in KH2. There's some amazing names in there including:
Pirates of the Caribbean Johnny Depp .... Jack Sparrow (unconfirmed)
Geoffrey Rush .... Barbossa (unconfirmed)
Orlando Bloom .... Will Turner (unconfirmed)
Keira Knightley .... Elizabeth Swann (unconfirmed)
If they can be confirmed then that is gonna be one hell of a world.