I decided to buy a personal heart rate monitor to see how many calories i burn while working out and running. THe problem is that i have no clue or experience on these things, and i was wondering if there are any of on this forum that has experience with them I would like to know which is the most accurate, reliable, battery life, and most importantly, the price range of these things. I really dont need a very fancy one or anything. Just mainly a one that counts the amount of calories burnt, and the accuracy of it. Thanx!