I never had one (but did want one, just financially couldn't justify it at the time), but it would have a great fit for me. I just wanted a watch to tell the time, and display my phone notifications plus vibrate to alert me to them. That would have been legitimately useful for the job I was in at the time which was challenging to carry a phone (but it was nearby in my bag).

Now, I have no use for any of that. But I am now interested in a heart rate monitor that doesn't hoover my data to replace my old dedicated Polar heart rate monitor (which also told the time, but I only wore it exercising), so the more expensive model is tempting!