I very recently switched from a glass tank to a PVC tank. Aside from the heat and humidity issues already mentioned with glass tanks, I was getting very tired of having to take the entire lid off every time I needed into the tank. The whole top screen had to come off, but my CHE was attached to it, so I had to rest it diagonally across the top of the tank to prevent burning anything with the bulb. This left very little room to reach in and do anything, and it got to be really difficult for me to get my snake out. Not to mention, I needed two hands to move the lid, so I'd either leave the lid off the whole time he was out or ask my boyfriend to help me. The front doors on my new PVC enclosure are so much nicer and easier to work with, and the temperature and humidity levels are much easier to maintain.