I also have the Polar FT4, and find it's a great little motivational tool to go just a little longer, or try to work out just a little more intensely. I feel it sometimes overestimates calories a bit because once I get my heart rate up, it doesn't go back down much even if I ease up on intensity, but I think that's a personal problem rather than a Polar HRM problem.
Do some research on what features you want based on what type of exercise you do. Polar's website lets you compare different models and sort by waterproof, whether it has a training program, how long it saves data so you can look at your progress, etc. If you run outside you may want a GPS model (I've seen Garmins recommended for that). No matter what you pick, get one that has a chest strap. If it doesn't have a chest strap it is basically just guessing, and you can do that for free.
I've had a polar f4 for several years. My strap battery just died last week. It was a great HRM. I'm now trying to decide if I want to just get a new strap ($30-40) or upgrade to one that will work with my phone ($60-80). If you go the phone route, make sure you get the one that goes with your type phone. They make different straps for iphones and androids
I have a Polar FT4 and I got it on Amazon for $50. It tracks calories burned, heart rate, in the zone heart rate, time, and it will give you an average over time of calories burned/heart rate. It also shows a little birthday cake on the watch when its your birthday :)
Fitness Minutes: (14,252)
9,619 6/19/13 5:23 P
I don't really think there's a "best", there's different kinds with different features to suit different needs. :) I bought a Garmin Forerunner 110, because it has the GPS tracking/mapping features I need for outdoor exercise, combined with a chest-strap based HRM that gives great, accurate calorie burn.
I also got a cheapo Sportline at Walmart for $50 that was just a basic chest-strap HRM with timers. It worked great! My only complaint was that you couldn't stop it from counting calories as long as it was in sync with the strap, so if you didn't take note of the number when you were done, you'd get a huge calorie burn on the way home from the gym. ;)
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