I had all 3. The best was sky pro, fantastic for things like club plane, attack angle, club speed, shaft lean etc. Swingbyte was good and had a great feature of showing your clubhead speed at all stages of the swing and you could compare it to a pro-I tried hard to keep accelerating just before contact but never really could-constant was the best (basically I was the same speed as a pro 1 foot before contact and lost 5-10mph on those last few inches). Zepp, I didnt find as good as the other two (data not as useful or reliable). I would buy skypro or swingbyte in a heartbeat if they still worked. I did pick up another swingbyte after they stopped, but the battery was poor and it became useless quickly. I think the reason they must have stopped was economics, they retailed for $100-200 and that was not enough to keep it going. I got in touch with the skypro inventor, about 5+ years ago, he certainly intended to do a better version (the device was very susceptible to breaking down after a couple of months, would not charge), but I guess he must never have got it off the ground. I got a Garmen approach recently, its very good for the price ($400 ebay), about 90% accurate (meaning 90% of shots are very accurate, 10% get a dodgy result, probably spin), but the shaft devices would certainly give even more useful data from an improvement perspective. I am now looking at Blast Motion and Dewiz. Online reviews seem to suggest the Blast gives club and max hand speed, but I don't see evidence that these are shown for the whole swing, which is what is important. DeWiz does seem to have at least some of that but is more expensive (circa $500) .......hope that's helpful............
I had all 3. The best was sky pro, fantastic for things like club plane, attack angle, club speed, shaft lean etc. Swingbyte was good and had a great feature of showing your clubhead speed at all stages of the swing and you could compare it to a pro-I tried hard to keep accelerating just before contact but never really could-constant was the best (basically I was the same speed as a pro 1 foot before contact and lost 5-10mph on those last few inches). Zepp, I didnt find as good as the other two (data not as useful or reliable). I would buy skypro or swingbyte in a heartbeat if they still worked. I did pick up another swingbyte after they stopped, but the battery was poor and it became useless quickly. I think the reason they must have stopped was economics, they retailed for $100-200 and that was not enough to keep it going. I got in touch with the skypro inventor, about 5+ years ago, he certainly intended to do a better version (the device was very susceptible to breaking down after a couple of months, would not charge), but I guess he must never have got it off the ground. I got a Garmen approach recently, its very good for the price ($400 ebay), about 90% accurate (meaning 90% of shots are very accurate, 10% get a dodgy result, probably spin), but the shaft devices would certainly give even more useful data from an improvement perspective. I am now looking at Blast Motion and Dewiz. Online reviews seem to suggest the Blast gives club and max hand speed, but I don't see evidence that these are shown for the whole swing, which is what is important. DeWiz does seem to have at least some of that but is more expensive (circa $500) .......hope that's helpful............
