A financial transaction instrument selector tool to help customers find a financial transaction instrument that is tailored to that customer's preferences. Preferences are input to a computer. Financial transaction instruments are selected to match the input preferences. The selected financial transaction instruments are then displayed for viewing. The preferences can be altered continuously. The effect of a change in at least one preference on the financial transaction instruments selected and displayed is updated in real-time. A double random sort technique may be used to determine the display order of financial transaction instruments that are selected.