BodyBugg experiences

I am thinking of getting one to monitor my calories. I am never quite sure of what i burn, sometimes I teach 5-6 yoga & pilates classes in one day, or give 5- massages in one day, and I am quite curious what my calorie burn is. My HRM is good, but I don't think it's as accurate.

If you have a Body Bugg, what is your experience? Is it worth it? Do you pay for the monthly services?


TIA everyone