My vote goes for Animal Plastics. I have a couple shoebox racks from Nature's Spirit Reptile's that are great also. However, NSR uses back heat so their sweater box racks wouldn't be sufficient for leos because the floor temps will never be right. Basically in order to get a floor temp of say 92 degrees you'd have to crank up the thermostat to a point where the ambient temperature in the box would be too hot. Remember heat rises. The shoeboxes are much smaller so you don't really get that problem.