After doing some research as to what this range represents in the real world in terms of credit risk and available interest rates, I came up with the following guide:
850-770: The very best credit, very low risk, the very lowest interest rates
770-730: Excellent credit, low risk, great interest rates
730-720: Average (more specifically, 723 is average)
720-710: Good credit
710-630: Questionable credit, moderate risk
630-610: Poor credit, high risk, high interest rates
