I think that Aragorn looks best in the fighting scenes when he's all sweaty, unwashed and dirty..
..umm..where was I?
Right, I think the Ranger look fits Aragorn a lot better than his coronation look...
He's just not the guy that's fully armed...you know with helmet and shield and all that stuff, which is why I think he looks so awkward at the end of RotK. It's just not the "real" Aragorn...