I've ran $xxx,xxx through copeac. It's a great network with great AMs. One of my top 3 favorites consistently.
I always wonder why people posts questions like this sometimes. COPEAC is a well respected CPA company, know people who do VERY well with this company and people are always recommending it.
Yeah, Copeac are good. I've got Dan as my AM and he is brilliant. They have a designs department too to generate custom creatives which are skilled and free. They're #1 on my resources page on my blog.