Hi, betting best fluctuation either with IAS, Centrebet or Sportingbet will give you the best deal most of the time, however if you like to bet on longshots regularly then IAS Betadiv and Diviplus will work in your favour as these often seem to pay more than the best fluctuation for horses paying $8 or more. Also Centrebet and Sportingbet only have telephone facilities with minimum bets of $50 whereas IAS also offers internet betting from $5. It may pay you to have accounts with IAS and one of the other two, as the others don't take 5% off the top of your best fluctuation payout.