OK—this one, maybe not so reasonable price-wise. But you sure get a lot!
I’m referring to Polar’s very slick RS800CX G5 ($600). It has it all: GPS sensor to track route, full heart rate and calorie-counting functions, easy connectivity to a computer with a USB cord, water-resistance to 165 feet, and much more. The high-end multi-sport pack comes with three sensors to cover any activity. Expensive, but if you really want a do-everything watch, this is it.