I've been using my Garmin BPM for months now without issue. Yes it might be more expensive than other BPM on the market, but all of my other health data is in Garmin Connect. So might as well have my BP in there too. Overall I am quite happy with it. Even if the big X is still coming up at the end of my reading. Looking at the Garmin forums I see that I am not the only one experiencing this issue either.