What are the most important features for a surebet scanner?

The following functions are the most important:

• Scanner speed—the higher the scanning speed, the faster arbitrage bets are found and ready for betting.
• Scan quality—in other words, the fewer errors in the delivered results, the fewer mistakes bettors make.
• Price—everything is clear here, but a lower price is not always better.  It is important to find a balance between quality and price.

It would also be important for the scanner to process as many bookmaker offers as possible, have a good selection of individually configurable filters, as well as a pleasant and user-friendly interface.