Advice Needed, Bumper Skin Replacement
 

I just got a 2001 Crown Victoria. Car is like new 20k some miles, but the previous owner hit a few curbs on the front and back. Nothing bad, but just enough to make the bumpers look worn. I like to replace the bumper skins. Lots of them for sale on the internet, but all are after market. How good are they? Are there any good after market ones and how do they compair to the Dealer / OEM ones. Would not mind getting the OEM ones, but $$$.
Anyone with advice.