I use Adsense, and occasionally adparlor.
Adsense will make you the most money. Problem is, it takes a while. After you reach the minimum for payment in a month ($100), then it takes about 25 days after the end of that month to get even a direct deposit.
Adparlor banners often cause apps to be denied, but you can withdraw money from it anytime it's above $20, and it only takes like 3 days for deposit into a paypal account.
Hope this helps.