da protector is a hard piece of plastic that covers ur LCD screen and the small info screen above the LCD on ur 300D. won't affect ur viewing of ur images displayed. but, unless u purposely go and scratch it, the da protector is almost indestructable!
CP's is just a small piece of plastic that protects the LCD screen only. depends on the quality of plastic, after a while, it will pop out.... like mine... :cry: which was i switched over to da protector. :thumbsup: