A guy who used to be on here called Jacfin did some research on Unitab 100 raters. He found that backing 100 raters in Bris, Syd & Melb on Saturdays at dividends of $8.00+ produced a handy profit over a period of a year or so.

Personally, I love the Unitab 100 raters and I have several little systems based around them.