I too just bought the ferret nation cage after the ferret population in my house expanded from three to five (thank you ferret friends rescue). It is absolutely better than any cage I have ever had and way better than the super pet cages. Finally... a cage where the big high-backed litter box can fit through the door with no problems (no need to completely take the cage apart to get it in). The ferrets love it too. There is soo much room for their bedding and tons of hammocks and toys (not that it stops ALL FIVE of them from sleeping in ONE hammock together). I wouldn't get anything else. Plus, you can always just start with the base unit and add levels as you desire. It is multi-functional. Just my two cents. Katie & the Fab Five [Posted in FML issue 5170]