It rained today so with some time on my hands I hooked up the Optishot to my computer and also hooked up the swing analyzer. The optishot is a pad with two sensors that measures the club speed, face angle and swing path and then show the flight of the ball on the computer screen. The swing analyzer shows some swing path info club face etc. There was about a 40 years distance gap in the swing analyzer and the optishot. The optishot had me hitting my 5 iron between 180 and 190 and the other swing analyzer had a carry distance of 150-160. On the range and course I use a 5 iron to hit shots between 180 and 190 and get there. I'm beginning to question the accuracy of these swing analyzers.