I was wondering what kind of data sites everyone prefers for getting different skip traced lists with cell/landline numbers!

Searchbug.com has a good, very inexpensive reverse email append you might consider. https://www.searchbug.com/batch/phone-name-address-email-append.aspx@Jeff Mason -  the above tool can also be used to batch email search.

Let me know if you want to set up a phone call.

Not at all surprised you have high humidity; the hydrostatic pressure is forcing moisture through the pours of the block, past the interior cell (even if not fully grouted) and out the pours of the interior face. 

Ask them if they are willing to meet with you or take a phone call.

We pay all utilities, including cable, internet, and phone.

The toughest part is always picking up the phone.

My deals usually work like this now a days:  I locate a 1990 or later model mobile home in Michigan, Indiana, Illinois, Ohio, Wisconsin or Kentucky and I collect all of the details I can (including pictures if possible) and I negotiate a fair price over the phone. 

Pick up the phone and start dialing your local banks.

You can also run a test ad in the metro newspaper at different price points and see what makes the phone ring.