Thanks Dave!
Efficiency is definitely something I think of when buying items like this. That's why im leaning 3.5 cf.
Knowing you can fit all that in yours gives me peace of mind. I'll never need anything more than med rats and two of mine will be on hoppers for life. So even if I add another snake or three I'll still have ample room.
That particular model seems to fit all my specs and is more affordable than others I looked at. Thanks for sharing!!!