Cool. We currently use Webads and I've been (more or less) happy with them. They have been proactive with making suggestions and they found proper advertisers for our stuff (BMW, Rolex). I know it's another agency but I can put your guys in contact with our rep, who has been there for a long time and she meets with us regularly, even though we don't generate a lot of revenue for her.
Let me know, I'd be happy to make a connection.
http://www.ecademy.com
01920 412 433 - 077 5907 2173
julian.bond@ecademy.com