I say build your own. its pretty easy and a ton of people on here have done it in many different ways. Here is the one I did well the post about it and i think it was the best choice i made. I made it in such a way that i can easily add and work on the rack as needed as well. Plus that design i can use the 41qt for breeding/big girls and use 28qt tubs everywhere else. I can also add a shelf whenever I want for more space.
But bowing is an issue i know I will face. If you set it for a deeper shelf you can use a few more screws and not have to worry about that.
Would help if i included the link....
http://ball-pythons.net/forums/showt......-setup-pics