I recently upgraded from the original SkyTrak to the SkyTrak+ - the addition of club data (club path, club face angle relative to club path and to target line) makes a huge difference in understanding what is going on with your golf swing. Previously, with the original SkyTrak, only having ball flight data made you guess in terms of your swing as to why the ball flight was doing what it was doing. Now, there is no guessing. I've always been a huge SkyTrak fan, but the SkyTrak+ takes it to a new level!