Wanted: full featured ad management system

Hi guys. Sorry I've been a bit out of the loop for a few months. Bought a house and was shocked at how much time renovation took.

Anyway, I'm looking for a full-featured ad management system that can handle lots of advertisers, scheduling the start and stop of their campaigns, different ads for each advertiser in different parts of the Web site (and in email newsletters), the ability to provide both automated reporting and the ability to turn that on and off for each advertiser... you get the idea.

I've found a few addons on the WP site, but if you're looking for a new plug-in suggestion, this one is mine for you. Oh, and it needs to be multi-site and allow advertisers to run a campaign on one site, all sites, or a selection.

Thanks,
David