I have been using Whitepages Premium for about 6 months now, and overall it has been very good to me. I call on about 200-300 properties a month and use the reverse address search to get the information I need to get in contact with the owner.  

My complaint is that sometimes it will list 10 different numbers for one person and you will have to call through multiple disconnected numbers or just outright wrong numbers in order to get in contact with the right person. Eventually you will get in contact with the owner, but it is just time consuming. My other complaint is that for my premium subscription of $20/month it only allows me to pull information on 200 people a month. After that I am cut off and forced to use other sites that aren't as accurate.

In conclusion, Whitepages is an effective tool for getting in contact with property owners but I am curious to see if anyone has alternative methods/websites that they use that are more effective and help address my complaints. 

Let me know what you think.