yes OEM is worth it. i know its a bit more money, but if you care about fit and finish it is the way to go. Sometimes you get lucky with the aftermarket, but most of the time it just doesn't look right. remember that aftermarket bumpers are made from molds of molds of molds...kinda like a copy of a copy of a copy...each time it loses a little. As for lips, you are prob. gonna bust them up over time, CF ones look cool but chip and break and are expensive. A good/cheap ABS/poly lip is a good call. it's also worth the extra money to get ones that use factory mount points.