What is the difference between the ATM and the ATM Pro?
The standard ATM contains data from the larger, corporate, bookies in Australia & New Zealand, plus a selection of rails bookies. It displays data from the most popular markets within each sport, which are unlikely to draw unwanted attention to your account.
The ATM Pro adds a much wider range of bookies. These additional bookies are mostly rails bookies who do not like bonus bets to be used on sports. With these bookies we would always recommend using BBs on racing.
Pro also includes data from a wider range of markets. This leads to more arbitrage opportunities appearing on Pro. However, arbs should always be treated with caution. If you value account sustainability you need to vary your arb stakes based on the odds of the selection and the obscurity of the market (e.g. an arb at short odds on an EPL Match Odds market should be treated very differently from a high odds arb on Challenger tennis). The amount of time until the event takes place is another factor to consider.
For a complete list of which bookies and markets are available on which tiers check here.