I have no personal experience with the "chrome" window strips (I know what pieces you are talking about, can't recall the real name) but if they are aftermarket, I think I'd stay away from them.
From what I HAVE seen of aftermarket chromed plastic trim stuff, it doesn't last long at all before it starts to look bad.
I just went with black so I didn't have to deal with the discoloration or peeling of the chrome ones.
Not that you asked, but I don't think cosmetically there is much difference, especially since both were stock pieces.