I know chickens are attracted to red and would be a pro for the plastic waterer nipples but are there benefits to having the stainless steel waterer nipples? Does anyone use the stainless steel? We need to get these soon but I wanted to see which would be better. From what I've seen the stainless steel waterer nipples are cheaper which don't make sense to me. Anyways, I would REALLY appreciate some answers. Thank you.