These are the brands I currently push and in this order
1) Bookmaker.com
2) BetUs.com
3) Sportsbook.com (including players only and superbook)
3) Intertops
4) Sportbet.com
as well as some other smaller books
Sportsbook.com is a good brand to push and drives me a good income as well bookmaker.com so surprised to hear how bad the conversions are.
http://www.commissionaccount.com/new is the signup page for sportsbook.com affiliate program.