The best recommendation I can make is to purchase the Wizard ratings produced by Warren Block. Google everyrace.
$5.50 for a day for every meeting in Australia and you get access to the historical database for a week after purchasing a single day.
I've used Warren's stuff since the first day the Wizard appeared on newstands (and it was 5 bucks then) and it is the best .. no question.
Get to know how the numbers are compiled ...... I've got some issues with the way consistency and jockeys are dealt with in the Wizard numbers and I've had numerous conversations with Warren over the years but overall it's the best service of it's type .. no question.
I often wonder if Warren views me as some crazy obsessive ... but he's always polite.
The Superform ratings service he offers is simply magnificent, ..... $21.50 a week plus $5.50 a each day you want to access for historical ratings on every runner in Australia ..... ridiculous value for the price.