There are more than a few threads on racks....but...
Freedom Breeder
ARS Caging
Reptile Basics
Animal Plastics
Boaphile Plastics
HerpEnclosures
Nature's Spirit
Vision Racks
I know I'm missing a few. Personally I have all Reptile Basics racks and I couldn't be happier with them, but if money wasn't an object I'd switch over to all Freedom Breeder/ARS type steel frame racks for the sole reason of long standing durability...(although both can be purchased per level.)
I'm not sure of your definition of reasonable though...
-Jason