Disappointing AOT Comsec being scrapped, it may not have been the cheapest but it was reliable and generally smooth. I believe it was up to 6 trades that could be bulked and over a certain amount it was % based which id been hit with a few times while heavily day trading large caps.
Self Wealth's $9.50 deal looks pretty good, effectively get 3 trades in at that price and save when making less. I notice they use OpenTrader, which would suggest such a deal should be workable with them.