We use Adwhirl to run in this order - iAd, Adsense, Admob. iAd has been making us the most money so we give it the highest priority. We also use transpera and

We use Adwhirl to run in this order - iAd, Adsense, Admob. iAd has been making us the most money so we give it the highest priority. We also use transpera and greystripe in some of our apps.