OEM: In my opinion looks the best (not too big not too small) just right.
GReddy: Too big for my liking, looks like a lawn mower when your lowered.
Mugen: Good luck finding a genuine one, there are replicas out there but fitment is always an issue and there has also been problems fitting JDM fogs lights in the replica lips
Type R: No such thing, its photoshopped, the closest thing is the Type S lip (http://yhst-1408381693991.stores.yah...prtysfrli.html) you could say its like a smaller subtle OEM lip.
WWR: Doesn't look bad, don't got much info on them, but don't really like those holds or the part in the middle that goes in.

Maybe im biased to the OEM because i have one but yeah hope that helped a bit in your decision.