Fenders? I like my aluminum Velo Orange fenders, but that's more a preference of how they look then how they work. Mostly. I do thing my plastic fenders were easier to get out of alignment. I think I spent much more time adjusting them then I do my metal fenders. But almost any time the bike is packed or put in a car, the fenders need some adjustment.

But if you want easy removal, I think you're limited to a subset of plastic fenders. I've never had quick release fenders.