Lol, I knew what you meant, but didn't acknowledge it either! Sorry! I'll never use nipple rings so I skipped on past it.
Some people don't like the Brinsea rails, but I like how adjustable they are and can be adjusted to any size egg or carton.
I'm getting the 20 for xmass/bday in December. I will add you to the list of people to get advice from!