I have been wondering about this due to that fact that a personal goal it to get all of the golds across all three versions of the game, but each has it's own added content.

The EURO version has the most unique content with the Omega Pack (It does rule...).

The JAP version has the most content. Coca-Cola, Continue, Packs earlier than the rest, but do you really nead 4 versions of Koltiwa?

The USA Version doesn't really have that much going for it besides... uh... um... Don't mess with Texas.

So what's your favorite/most played version of the game?
Damn I wish I could have done a poll.