I have two Animal Plastic racks currently (hatchling and a 1753 model (I think, anyway) for my males, juvenile females) and a third being built for my breeder females. Rich (at RBI) has great customer service but I haven't purchased any of his racks so I can't say on that aspect of things. The only draw back I really see to the racks are that they don't allow you to really see the animals very much...but with a ball python, that kind of goes with the territory, lol! I keep mine in a temperature controlled room that's heated and cooled and they hold the temps extremely well. As has been said, I'd say buy what you like and want the first time rather than settle. Animal Plastics has incredible customer service and their lead times for construction aren't too bad at all (6-8 weeks on the 12-slot CB-70 rack I have coming), plus their products are built like tanks. The only drawback to their racks is that they don't come with tubs, so figure that cost into your total price if you look at them versus RBI.