Maybe its me but I don't want my speed/cadence computer to do heart rate as well. Nor do I want my heart rate monitor to store mileage data for my bicycles. There are a ton of wired speed/distance computers and several of them do cadence as well. Reliable as a rock. With wireless you have to spend the $$$ to get cadence. You really have to spend if you want heart rate, GPS, etc. in addition to speed and cadence. If you don't think of a speed/cadence/dist computer as "stripped down" you are well on your way to understanding what these things were meant to do in the first place. They aren't stripped down at all. The current crop of mega-function "cycling information kiosks" are actually over-engineered and excessive.
H