My shortie is currently in a tub, but I've got my ball pythons in an AP cages, and I LOVE them! Heat and humidity are both very easy to control and maintain, they are easy to clean, they look great, and the BPs appreciate the security of 3 walls while they can still see what's going on. I can't wait until I move my BST into a T10 (which will hopefully be this spring)!

As for heat, I've heard mixed things about RHPs. I know plenty of people who rave about them, but I've also heard some negative reviews. I use flexwatt with a Johnsons' t'stat; as far as heating for PVCs goes, it's the cheapest, and it works just fine.