Gary,
I suggest that you stay away from stick on lables too. They get stuck in many changers that don't have a top load design. My car has specific warnings about just such media. Send them to a print house, or look into buying a printer yourself. I've seen great results from a unit that was about $2000. It prints right on the CD .... much more professional and durable.
The exessive heat generated by some CD players can melt the glue and wrincle a stick on lable ..... making the CD wobble at a funny angle as it spins. Beware of low cost options. They sometimes can be harmful.