Summary: I owned the S1 and then upgraded to the S3 a little more than a year ago. I liked both when they worked. If you are contemplating the purchase of any of the watch-type GPS models please note that the battery is soldered in place and you cannot (should not try to) replace it.
Summary: I bought the Garmin S3 in March 2014 after years of using a SkyCaddie. I liked the idea of not having to download courses as well as the lack of a paid subscription. Truthfully, over time, I have become very disappointed in the S3's lack of accuracy.
Summary: Its a good idea, however there are few things that was concern, on of witch you had to watch out if you are wearing long sleeves because if you are the clothing some changes the hold number or screen and you have always fuss with it.
Summary: I bought the S3 about 6 months ago and have had a chance to use it both on my home course and while on vacation in several different locations. While very convenient compared to carrying around a range finder or other hand-held device, I find the yardages inconsistent and unreliable.
Summary: It's a great idea and very handy...when it's on the right hole. Bought it, charged it, took it to the course, first hole...worked great...second hole, it wouldn't change over to the next hole. And, there is no way to manually input or change to another hole so it was stuck.
Summary: When you happen on the right button combination, the watch works for distance to the green. Bought this one for my wife so she would know distance to dogleg, sand trap, etc. Best we have gotten is distance to front, middle, and back of green. The (much) cheaper version does that.
Summary: I had a Garmin Approach S1 since it first came out and I had no problems with it at all. I purchased the Approach S3 because it promised so much, but it just did not deliver what was expected.
Excerpt: Garmin has communicated they have a new software update fixing the problem highlighted below by 2 users regarding inputting location information. As I returned my watch I cannot confirm this is fixed. Perhaps someone else can test and confirm. My rating below assumes this is fixed