Since I chose Chimchar in my japanese Platinum, thus completing the Type Triangle(Diamond=Piplup, Pearl=Turtwig, Platinum=Chimchar), I think I'll go with my favorite of them all. Piplup. Although, since I am going to have a Manaphy that kinda puts it up in the air. Then again, I did have both on my original Diamond Team. Great now I don't know what one I want to pick!