I’ve used Arccos since 2019 and I had a learning curve at first. Once I got past that curve it’s been smooth sailing. Does it miss a shot or two here and there? Yes, but usually during putting. I love the analytics it produces and how it shows me the areas to improve my game. I originally had the Arccos link gen 2 but now have the Link Pro and I can’t say enough about the improved accuracy and ease of use. I also have the Apple Watch when playing and I find this is the easiest for recording the pin position. Sure the subscription isn’t for everyone but you can’t deny the data it kicks out. You can also link it to your GHIN account and it will update to GHIN after each round if you want. Big fan here!