I've been using the Assiamo Duo for about 5 years and like them a lot. They appear to be accurate (according to DC Rainmaker) - simple to install, the battery life is excellent, and they pair very quickly with my bike computer. As an added bonus, I use them to calibrate my Peloton from time to time. Also, I was on vacation and rented a nice bike. It was nice to be able to easily put the Assiamos on and have my power meter with me. Great product.