I have not seen many reviews at all for the Kardia, but I have yet to see anyone posting at affibers.org badmouthing the product. Everyone seems to think they're a good investment, particularly compared to a $400 smart watch. It's just that they have to be carried, not worn, so a bit of convenience is missing.

I decided some time ago to go for the Galaxy watch, and now have had three models of it, the Wear 2, Galaxy 4, and now the 6. I like them for their rotating bezel, a very nifty device, in addition to the various features and functions. It was my Galaxy 4, once the Canadian government okay'd the ECG and BP functions, that showed my electrophysiologist that I was still experiencing AF after he had ablated me four months earlier. He asked for a printout of my ECG, and once he saw it, there was no arguing.

If I had a nice watch that I liked, say a sentimental gift and maybe expensive to replace, I would urge you to just pay for a Kardia. The product is warranted and supported, and you can always return it if it doesn't do what you need it to do. But, I'm going out on a limb and think that you'll be happy with it.