Besides the animals themselves, think about how much time you have daily to spend on them, and whether you would rather be out doing other things (longer days at work, school, recreation away from home, trips on weekends, etc). If an animal that only needs a few minutes a day will fit your schedule better, choose the beardie. If you are someone who enjoys fussing and tinkering with a more technical setup you may like the cham better. I know one of the things about chams that appeal is the creation of a more detailed and interesting setup. But for others it is just too much hassle for an animal that doesn't even "like" them.