Best People Finder Programs for phone numbers

[Shane Clark]

I am building a farm list and have just over a thousand names and addresses I have pulled from title reports and 3rd party sources such as Property Radar.  I have been looking up phone numbers using online White Pages and Spokeo.  So far I have had about a 50% success rate of finding correct numbers.  Does anyone have other recommendations for People Finder sites to find phone numbers and/or e-mail addresses? 

Thank you!