I've recently switched from basic paper towel to aspen bedding from the local tractor supply store. Cost me $13 for a huge bag (don't remember the actual weight at the moment) but I've loved it. My big BP's, especially Emrys, kept having trouble with tipping their water bowl over and flooding the tub floor on the paper towel, but now when they tip it I just have to scoop out the wet aspen and it's so much easier to deal with. I don't have a humidity problem since I have them in racks, and my "reptile room" is a walk-in closet, so the small space holds a good temp and humidity.