I just switched from a glass tank (that I had modified by blacking out three sides and duct taping foil on top of most of the mesh screen) to a PVC cage and I already love it so much more. Humidity is way more constant, there's twice as much floor space (the tank was 1 ft x 3 ft floor space, which was cramped for my 1600 g girl plus her two hides and water dish), the ambient temp is stable, the PVC cage weighs far less than the glass cage (nice for moving around for cleaning or whatnot)...seriously, it's the best investment I've made for my BP, next to the Herpstat I also own. The glass tank setup can be done, but it's definitely not ideal, especially if you live in an area where it's cold and low in humidity for 5 months a year.