411.com worked the best that I tried..

I used a company number and my own.. both worked correctly.

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However.. [link to www.fastpeoplesearch.com (secure)]

Did not show my name for my phone...
But it did show some other name.. BUT WITH A DIFFERENT AREA CODE !

And it showed a previous girlfriend's info..
But the phone was never in her name..
It did provide tons of info on her previous phone numbers, addresses, etc.. FREE.

Clear easy to read info..
I may start using them to track down tenants, and for info..

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I use TruthFinder.com normally and pay a slight monthly fee.
The may show you a free phone lookup.. Don't know..
But will show Members.. Legal History of crimes, bankruptcy, etc.. Sometimes even Warrant info.. but no details.. just like the location.. so you can call and see if there are any outstanding warrants on the person. Then sick the Police on them.

Cars and Home Ownership.. locations, and $Valued is pretty good info. Then you can research the home details more online in other places.. if you want.

Biggest problem.. is shows some employment info..
Lots of phone numbers and emails.. but a lot of old outdated info often pops up.

It is not as good at finding Cell Phone numbers either.