Which edition should I choose?

It depends on your goals. Start with Free (Shareware) at $19 if you want to evaluate the platform first. Choose One Leg ($465) for a single-strategy retail setup. Pick Custom Configuration (from $275) if you want specific modules and not all six. Go with the All Arbitrage Bundle ($1,355) for the full six-strategy package and compatibility with prop firms. Full side-by-side comparison is on the Editions page.