Which is the better prize? A Mac truck or a Volvo?
Or which is better, written content or photos? Your question leaves a lot to be desired. You don't have apples and oranges here, you have tigers and bananas. It depends on what kind of contest you want to run, the audience you want to capture (or harvest), and the result you expect. Sorry, but your question is far to generic to even add a poll to it. Think of the specifics, do some research on your own, and then if you still have some questions, come back and post one for discussion.