I introduce the female to the males inclosure, reason for is that when i put the male into the females cage, the male seems to explore the new cage instead of his 100% focus on the female.
When i introduce the female to the male inclosure, its the males house and the female is something new to him so he always seems to go check the female out really fast!
But i works both ways, i just use the method i think works best for me, LOL
I usually introduce the male to the female's enclosure. But I agree with Bret when you introduce the female to the male's enclosure the female will have 100% attention of the male. But both methods work.