It's the combo of speed, power, and mileage that really sets it apart. Skidmore told me this weekend he thought you needed to be able to do at least 8 minutes, and the Extech does that easily. We went from 50 deg and dry to 70+ deg and humid for Sunday and mine was a little fat for the main. I ran a little over 8 minutes after my last pit and still had probably 25 cc left in the tank. If you get a chance to lay hands on one, do it.