Opinions vary on the relative strength of the colts' and the fillies' form in Melbourne, but we'll find out this Saturday when many of the nation's best two-year-olds clash in the Blue Diamond at Caulfield.

Loving Gaby has plenty of fans after her devastating win in the Chairman's Stakes, but some surprise results through the preview series have left the result wide open.

The Diamond leads a cracking Caulfield program, with the Group 1 Futurity Stakes and Oakleigh Plate in support. Meanwhile at Rosehill it's Silver Slipper day, with the Golden Slipper lead-up supported by the Hobartville, the Millie Fox and the Parramatta Cup.

You'll find Australia's best form guide for Saturday's Caulfield, Rosehill, Eagle Farm and Morphettville meetings in this week's Best Bets, plus coverage of Friday night's meeting at The Valley.

On pages 4 and 5 you'll find four-state selections from some of the nation's leading form analysts as well as our popular Black Bookers, Sectional Stars and Video Stars features.

Best Bets ($6) is on sale Thursday morning in newsagents around Australia (Friday in SA, WA and some rural/regional areas).