We stock the Polar range of heart rate monitors. Sure, there are others, but Polar now offers a 2 year warranty, has a one week turn-around for repairs, sell parts for their units and are really good with their warranties. Why choose any other brand when the Australian Institute of Sport and the Queensland Academy of Sport use Polar?
If you are really interested in raising your performance, you should be using heart rate based training. Ask any of our staff about it. As far as monitors go, if you can afford it, a model with a coded transmitter will stop your training partner's monitor from interfering with yours.
Polar