taikor...PU is the best lar...the colour will not fade if u get a proper spray paint ppl to do it for u...all our car come with PU bumper...not so easy to crack compare with fiber...
the hard fiber sometimes will be more heavy then PU....so the best choice go for PU...PU will cost a bit more..worth the investment...
never never use PU together with Fiber...it will not match...face this problem in my car now...need constant repair on the bumper and that will cost u a lot in long run...