ask the sellers how they ship them, make sure they ship them in a full sized box, meaning they dont bend it at all, i have heard horror stories of people getting in there lips and its been all bent up to get into a smaller packaging.
from what i hear there is no difference, they are made of the same material, im pretty sure that most guys get their lips of ebay.
but thats just my cents. its going to get pretty beat up from driving and stuff regardless of which one you get. so if it was me i would go with the cheaper one.