I've found that True Credit gets in the ballpark figure, but they're still not accurate enough to be dependable. It just gives you an idea, and the reports are useful.
FICO scores are the only ones to care about.
FICO (06/17/08): TU 691 - EQ 642 - EX 638 - Util 64%
FICO (07/23/08): TU 698 - EQ 653 - EX 644 - Util 50%
FICO (02/04/09): TU 694 - EQ 668 - EX 654 - Util 43%
FICO (05/18/09): TU 687 - EQ 675 - EX n/a - Util 39%
FICO (03/09/10): TU 666 - EQ: 691 - EX 644 - Util 54%
IDGuard (2/8/12): TU 690 - EQ: 710 - EX 710 - Util 72%
FICO (03/13/12): EQ: 696 (87% revolving to limits)