Out of the listed cages, I do only have AP cages (T8). They are very sturdy and generally pretty easy to put together. I have had 2 pieces over the multiple orders I've had with them that weren't routed to fit the slots they were supposed to fit into, but they were extremely quick in sending replacements. Besides that, as long as you make sure each piece is lined up, they fit together very nicely. You do have to run the sealant yourself, which leaves room for error. I think they are more solid (thicker plastic) than Boaphile. The flexwatt under the cages work well - you obviously should have them on a hard surface and not on carpeting or anything. I'm not sure about the heat pad. I don't know what kind you have, but some of them can get hotter than the heat tape and I'd be a little wary of using them.

They are very nice cages and look good. I have sliding doors and there is an overlap of cage inside the glass which makes it harder for the snakes to accidentally push the glass open. I have noticed that urates can stick to the cage surfaces a bit more than I expected. They can stick to everything though, and it does come off with cleaning and some extra soaking. I just bought a hand-held steam cleaner, so I'm hoping that will help me with cages. Other than that, I just have AP racks and can't attest to the long term smell of cages. So far, so good!