Iwant to pick up a heart rate monitor for biking and other gerneral fitness. Can you guys that have them recommend a decent one for under $100. I would like one that gives me my current HR, and also has zones I can set as well as an alarm to let me know when I am out of that zone. I don't need bike functions since I have a bike computer. Again, just looking for a decent monitor without all the bells and whistles.