I would (and do) get T8's for BP's. Male or female, it doesn't make a big difference. You can use the optional divider and house 2 BP's, or without the divider for 1 BP (with adequate hides/cover)
Pros:
- easy to heat
- holds in humidity better than anything else
- very strong
- lots of options
Cons:
- cost
- size
Keep in mind that a rack will require you to heat an entire room to 75-80 degrees year round. With an AP cage all you have to do is heat the cage itself which is much easier and used less power.
Here is a thread I wrote on AP cages: http://ball-pythons.net/forums/showt...With-Pictures!