Although I have heard mixed reviews---my experience with the Cateye Double Wireless cadence model has been very good. I even bought it used off Ebay. It has been compatible with my HRM as well. It took a little teaking at first---and there are some times that it will very briefly drop off line when I go under a certain powerline. But for the most part----I really like it. It has been reliable and there is something literally neat about the clean installation without all the wires.