Not to bash a particular brand, but facts are facts, so I'll tell you what I've dealt with. The Super Pet (and other similar brands, but especially the Super Pet) cages with the plastic bottoms and Funnels (plastic tubes) are one of the reasons that people decide ferrets are "too much trouble to keep clean" and surrender them to shelters. Yes, they're pretty. But they're not real functional. The doors are too small for a respectable sized litter box, and it's a hassle to get a small box up to the door and out for cleaning without dumping it or hanging it on shelves or tubes. The tallest Super Pet cage with the long upright expanse of slick plastic tubing is ridiculous.... Most ferrets will climb (or attempt to climb) it once. Ferrets are fairly bright, they catch on quickly.... They certainly aren't going to bust their nose more than once coming down. The plastic shelves are too narrow, the "safety" ramp is too slick.... Ferrets are NOT large hamsters. The only saving grace of the cage is that it's detachable from the plastic bottom, so that you can string whatever is clinging to the lower wires out onto the floor to be cleaned after you've finished cleaning the plastic bottom. We have several of these cages (surrendered with ferrets). We take the tubing off & lay it on the floor where it's fun and useable. The shelves generally come out or are placed side by side to form a larger floor. They are the LAST cages to be used for housing ferrets at our shelter. You may have one and absolutely love it, but I'm sufficiently lazy to prefer function over form. When you're buying a cage, keep maintenance in mind. 24"x24" by whatever height also looks great.... But that's a loooonng way to reach to the back of the cage through a door to clean. (I install a second door on the opposite side to solve this problem.) The nicest size for roomy quarters is 36"x18". For space saving, the two-floor 36"x14" (actually sizes are approximate) is great. Above all, pay attention to the size and location of the door. It should be large enough for the size of litter box you need to use and located so that you can get the box out without disassembling the cage. You should be able to reach all corners of the cage without dislocating your shoulder. If the cage is to sit on the floor, the bottom floor of the cage is going to be the toughest one to reach into corners. Whether the drop tray is plastic or metal doesn't make much difference to me, personally. The metal trays are more inclined to rust. Debi Christy Ferrets First Foster Home [Posted in FML issue 3163]