Best service to use for calling expireds

[Peter A.]

Hey everyone, I'm brand new to the world of real estate agents and I have quickly found that cold calling of every form can be a huge part of any agents repertoire. That being said, what would you recommend is the best software for the job? I've heard redx and volcan7 mention before. Any feedback is greatly appreciated! Also any other tips for lead generation, I'm all ears!