On an A/C eviroment like my room, I set up my ranco to 96, 97 on the rare colder winter nights. That gives me around 90 under the warm hide. I've been using newspaper lately.

But like it was said, it's realy up to you to find your own settings that work for you and your snakes. Everyones temperatures are different. A temp gun helps alot, but something like an accurite works too.