I have a small computer on my bike that records things such as speed and distance. It is ancient so it doesn't collect data or connect to a computer or anything - but I still use it. I also had a heart-rate monitor (also ancient) that recorded other interesting information when working out. There are many newer versions of these devices and many are capable of talking to a computer. Does anyone have any experience with the modern gadgets out there? Which are good or poor and why? If I buy a gadget, I will use it, and therefore I will exercise.