The technology is great for irons, woods/drivers, and putters. Tells you exactly what you need for your swing (thing you could never see). You'll get 10-20 more yards if you haven't done a custom fitting. I was a bit frustrated that they asked me to bring my whole bag because they look at them to analyze your swing. All they do is have you swing your driver and six iron for baselining (I didn't bring my 6 because I just grabbed 7 clubs that I use most often but the 6 iron wasn't one of them). I got 5 emails pre-fitting so just tell people to bring there driver and 6 iron if that's what you're using for baseline. Or make it so the computer can easily baseline another club. I used my 7 to baseline and then hit all 6's for the fitting.