Adbrite didn't pay much anyway so I won't miss them myself, it took 8 months or more to make payout with them, and then they sent a cheque and the bank took 10% fees. If you have a lot of traffic, over 20k daily of English speakers, then xtendmedia is an option, but they'd want proof. Adversal is about all that's left tbh, pop-unders + full page ads pay the best, their banner ads are very poor though, I got 67c (40p) for 77k impressions so hardly worth the bother. They have rules as well, like 50% plus US/CA/GB/DE/FR/AU/NZ traffic and blocking on third world countries, website at least a month old and they want to see your stats but I found it easy to get accepted. Affiliate banners is another option but I haven't had much success with those. I did try bidvertiser too, but they don't want just proxy page ads, they want index page as well, but payout is abysmal so again, not worth it.
There isn't a lot of choice now unfortunately, there are other ad networks but most others pay a pittance or slow your page to a crawl, affecting user experience (like trafficrevenue) so aren't worth it. Some sites still use CPA but it's the best way to lose visitors imo, most hate surveys but I haven't tried it so can't say what the revenue's like. A lot of publisher networks frown on proxified page ads because of the pages surfed (adult sites, bloody w*nkers) so options are limited. You could of course sell banner space privately, that might potentially bring in the most cash but is more work.