You're making a great start. Just about everyone here has moaned "If only I knew all this when I was young," including 26-year-olds!
When scores are that different, there is usually something showing differently on that one report --more inquiries, an extra account, etc., so be sure to compare the accounts list. The easier way is to hit "view printable version" and print out all three and just lay them out, side by side.
Another thing to look at are the positives and negatives listed by each bureau on your three FICO scores (screen 2.) EX doesn't fully participate, so you don't get the positives, but if there's something mentioned on EQ that isn't on the others, or if there is a positive on TU that isn't on EQ, that might be it.
Finally, and this is really moving into magic 8-ball territory, you can look at the "Simulate best action" on the final screen of both EQ and TU, and see if EQ recommends something different. (Again, EX doesn't fully play, so they don't have the sim.) The score projections are definitely not gospel, but the sims are fun to play with. A lot of people buy their FICO's and never really dig into the report itself. By the way, if the sim says to pay down your balances 90% - 100% over the next 24 months, what they seem to be trying to say is to each month keep your balances at 1-9% of each card's credit limit. That confuses everyone who sees that!
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007