I've got one. The set up is a bit hit and miss and it doesn't always record the shot. Build quality is a bit iffy, it just feels a bit 'tinny' It's supplied with a cardboard template so you can set the ball in the right position to record the shot accurately - it's rubbish because it falls apart the moment it gets wet (I made a thin plastic template) But those are the negatives, none of which are a deal breaker for me. Once it's set up and recording properly it's accurate, and does everything it says it will.