I made the decision to use 41qt sterilites. Right now my collection isn't to the size where space is a big issue. I've heard people say that the 41qt is good for full grown adult females and too big otherwise. It does seem strange that it's vertical height is so low but mine don't seem to mind. They crawl onto the hides and still have room to lift their heads up. I found it's also a great size for me to have 2 hides, a water bowl and a log. I havent built a custom shelf for them yet so they're sitting on standard metal shelving units that require me to still use the snap on lids. I do have two that live in a snake condo that's giant and they do make use of the height but regular handling should be good enough to compinsate for the lower height in the 41qts in my opinion. Eventually I probably will switch to the industry standard sizing.