yes oem plastic is way better. the plastic on my 89 kx has been there since 89 and they have MINIMAL damage , the rear has some scuffing which is normal, the front fender has a very small rip on the front. and the shrouds are brand new OEM
on the other hand my 94 rm250s UFO (i believe) is all beaten to hell , with all kinds of discolouration , scuffs , breakage. and warpage.