Suggestions for list brokers?

[Taft Love]

I've spent some time searching online for real estate list brokers, but can't seem to find one. After landing on a handful of ridiculous websites with no easy way to contact the company, I'm growing frustrated. An ExactData rep reached out to me, but never responded when I replied to her email. 

I'm hoping someone here might be able to point me in the direction of a decent RE list broker. Any help here would be appreciated!