Thanks for both Hotrod and Driver72. This must be more professional than car magazine testing you guys using two devices and even having the 20lb balancing weight in Driver72's trunk.
Acceleration is what everyone is interested in and your data is just about that.
Gtech is just amazing for the price. The other products at the price range are just toys. Racelogic is for those who want to have the absolute truth and when the money is no object.