I have all ARS racks, all my snake racks and rodent racks are ARS. They are built like a tank. Very expensive but you get what you pay for, and if you ever resell your racks they hold their value the best. It's the most expensive though, a bunch of Tupperware bins stacked on a wire shelving unit is the cheapest way to go if you are on a budget LOL.
I've never been much of a rack person, but I must admit the ARS racks look pretty impressive. The ARS-8507 racks look like they would be great for ball pythons.