Look at the 332 it ia a touch taller and is likely a touche easier to clean (reaching into the back) The boaphile cages also are quite nice. Both will sag a touch but I have mine on a shelf with a support in the middle.
I have the 332 that's 18" tall. I love it. Its relatively inexpensive compared to animal plastics and some of the other PVC cages, and it works great.