Best comping tools to Find Accurate ARV and Rents

[Leonardo Rodriguez]

Hi everyone, 
Looking for the best comping tool I could use to find accurate rents, and ARV's for properties. I have used Propstream and Batchleads in the past and many times it has been inaccurate. I'm also thinking of getting my Real Estate license but only reason I would get it is to have access to the MLS and nothing wrong with getting my license but I just don't ant to waste my time with it if there is a system or systems out there can I can pay for.