Honestly, I would say neither as well. Repticarpet, no matter how much you clean it, will still stink. Many people find that after a month or two, even with cleaning the carpet, the snakes cage still smells foul.
I would not use repticarpet. Use something that is cheap and that you can throw away when it is soiled. Paper towels I think are the best option for you given your dislike for aspen.