Conclusion: I got mine about a year ago, I was very impressed at first. I liked all the features, score card, instant yardages, analysis, adding features.. After a year you would expect improvements to the software but none have been done, also expected them to make revisions to courses by adding missing hazards, or correct errors on existing layouts, but nothing.
Conclusion: I've had my Sonocaddie for some three years now. At first I thought this was a great unit because of the features but after using it I think that the accuracy is somewhat undesirable. The yardages can be off by 20 yards at time. I have the nikon laser range finder and it is far more accurate than this gps unit. The features are pretty good.
Conclusion: I have had mine for a couple of years now. The problem I have it that it is not always accurate. It can be 10-20 yards off sometimes and that it can vary from one hole to be next. Sometimes I had to wait 10-15 seconds for it to adjust to the new location. Also, for many courses, not many yardages for many hazards, bunkers, trees, etc are even given. I get nothing like the display shown in the ads. Sometimes I have to use a laser range finder to give me such yardages.