Start with pulling your FREE CR's from (ACR) annualcreditreport.com . they tend to have more info on them, then ones from a 3rd party. The CR's from ACR, come directly from each of the CRA's. You can pull 1 Free CR from TU,EQ and EX every 12 months.
Save your money and Don't Buy the Scores, they are what we call FAKO's.