Not about to jump to a decision just yet, but if I go with AP, a sliding glass door T10 with LEDs (I've heard they carve a groove for them plus an exit point for the electrical wire which sounds very nice), door locks and maybe a basking shelf, still debating if it's worth adding that. Suppose it would make adding climbing material easier plus give him an extra elevation if he so chooses, but I never see him climb anything these days so I'm not sure if he'd even appreciate the extra commodity.

Also, how does the whole heat panel thing work? It says you have to purchase it separately on the other linked website (Pro Products) and have it shipped to their facility to install it for you.