I've been using this for almost 3 months now and am delighted with the results so far. I use it primarily for working out in the gym which has Polar equipped machines and it always connects fine displaying the same heart rate as the watch.
Make sure you wet the 2 grey patches of the chest belt sufficiently, I now always run under the tap until well soaked. On a couple of ocassions my watch kept losing the heart rate signal but I think that was down to the grey patches not being wet enough as it worked fine as soon as I ran under the tap again.
It does everything I want it to do; sync with equipment, display heart rate, fat burn/fitness zones, calories burnt, workout duration, time/date, backlight, inc results displaying time spent in each zone. Strap is secure, buttons simple to operate and its easy to navigate.
Can't fault it so far so would happily recommend.