I decided to go with proline because of the HDPE does not absorb biofluids and I like the drop down window in front rather than the slide. I heard that the AP cages are pretty good about not absorbing too much but I just did not want to fight a snake out of a divided window. I also went with RHPs and I will try those out first to see if it works and if I need to bump it up I will add UTH. I haven't got them in yet but I will post the setups and provide feedback once I got them up and running.