what is the best heart rate monitor?

Polar A3 (*est. $75) Best value. Polar (the first company to make wireless heart rate monitors) is still the leader in the field. The Polar A3 heart-rate monitor is a favorite in reviews, which say it guides you like a personal trainer and allows you to view previous workout data. Reviews also say the Polar A3 heart-rate monitor is extremely accurate and easy to use, and its display is bold enough to see while you're working out. The only drawback to this brand is that you have to send the chest strap and wrist monitor back to Polar when batteries need replacing. (*est. $75) Polar F11 (*est. $150) Best heart-rate monitor overall. Polar's latest heart-rate monitor, the F11, also wins positive reviews among heart-rate monitors. For double the money, you get a lot of extra features over the Polar A3. Its "Keeps U Fit Workout Program" can be tailored to your personal goals, OwnZone keeps you in your target heart-rate zone, and OwnCal allows you to track calories consumed. (The less ...  more