I have a crate I'm getting ready to sell. The main thing that I would suggest is going for a large crate with a divider, that way you have a crate they can grow with, but the divider let's you section it off when they are small to help with potty training. We just had to purchase the 'Ginormous' crate as Daddy's girl is getting so tall and she has to bend her head when she sits in it. So her old crate will go to little sister and little sister's baby crate (it's a good size crate) will go up for sale.