Boaphiles are nice, they have BEAUTIFUL cages, I've never had any luck contacting them though and I'm pretty sure theres a long wait time to actually receive your cage.

Animal Plastics is another vendor that I know people use and like, I've never bought from them though. (They do have the option of white or black cages which is nice)

I get all my cages from RBI (Reptile Basics Inc.) and they work out nice, their largest cage size is the 4x2, which I use for all my boas and pythons, and they cost $239 (longest I've waited for a cage after ordering was about 3 weeks, and I've ordered 5 cages, 1 rack, supplies, and a cage pedestal from there)
http://reptilebasics.com/2x4-Cage-12-High-p-16237.html

You can ask more questions on the caging forum/check out some posts that are already there or check out dealer (cage dealer that is) reviews on the feedback section on this forum or on the BOI here
http://www.faunaclassifieds.com/foru...splay.php?f=13