Rack Systems: Belly Heat vs Back heat?

[Evenstar]

In this case you definitely want belying heat and you want an enclosed rack nothing open like Vision racks

Deborah (and anyone else!), what do you think of this one from RBI with the belly heat option??
RBI Iris Rack wide version

It appears to have an open back, but the sides are enclosed and I'd have it against an interior wall. Our basement is insulated and its a walk-out so there's lots of natural light and while it is cooler than the rest of the house, the room temp is usually around 75 (I do use a space heater in winter). My current BP is housed here in a tank and her temps are 92 on the hotspot and about 78 ambient. She seems to be a very happy snake - almost always hiding except at night, eats pretty well (for a BP, lol), and has perfect sheds.

**el8ch, I hope I'm not hijacking your thread - I felt that this info would helpful to us both.