Top 3 PPC networks that can be used with AdSense on same page?

Guys

I am planning to add more PPC network on my sites because AdSense is not trusted means due to any minor reason AdSense can suspend account. So I wish to add more PPC networks on same pages at my sites along with AdSense ad.

Which other good low minimum PPC networks do you suggest? I know about AdBrite, Bidvertiser, 7Search, etc but don't know about compatibility with Adsense.

Please list your recommendation with minimum payout?


John