I really love my boaphile racks; people complain about their lead times but if you're not in a rush and can wait 4 weeks for the rack I would recommend them. I use the 32qt Sideways racks, which also fits two 15qt tubs.
~*Rich
1.0 100% Het Albino
1.3 Normal
1.0 Spider
0.1 Mojave
1.0 Pastel 100% Het Goldfinger
0.1 Pastel 66% Het Goldfinger
0.1 Pastel PH Goldfinger
I have a five foot Boaphile, and it is really nice, but next time I'm going with AP cages, I've heard a lot of good things about them. And they're a bit more affordable.
All my racks are Boaphile and I really like them. I love the versatility of the sideways racks that Rich mentioned. You do need to order well in advance of when you will need them. I've heard good things about AP as well.