Help! What advertisement system offers all the functions ad clients today need?

I run an advertising-supported content site. I have been working with my developer to tweak the Drupal ad module (http://drupal.org/project/ad) and I am now at the point with it that I have to ask the question of whether the system's not for me. I need a system to:

1) Allow for all the different ways clients submit ad creative (including by third-party code, a direct image and Flash)
2) Track views and clicks
3) Allow for weighting (i.e. so I can put three ads in the same unit and tell them to display more or less than another)

While I am having significant theming issues with this module to make the ads appear correctly where I want them to (and I recently discovered different kinds of ads display differently!), I have also discovered with this module:

1) It can't register clicks with coded ads, which is a huge problem.
2) I believe I'm seeing now that it can't register clicks on ads where I upload the image as well, which is a huge problem and I thought it was supposed to.
3) It can't support Flash ads unless it's through coded ads, which is bad.
4) It can't support ad weighting (i.e. me having three ads in the same unit and telling them to appear 20%, 30% and 50% together).

I'm sure there are tons of Drupal sites out there with ad systems that solve the very standard needs I'm asking for. Can anyone point me to a few options out there that are better than this Druapl ad module? THANK YOU!