Anyone have a Bodybugg or general weight loss monitor?

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Anyone out there have a Bodybugg? How does it work? Is it complicated to use? Do you HAVE to belong to their website and pay a monthly fee? I just bought a Mio Triumph watch...suppose to be able to measure your heart rate at any given moment with the touch of a button and then find out how many calories you burned at the end of a workout. This thing does NOT work very well for me....either it sucks or I need something less complicated LOL. Any advice for something simple to check heart rate and calories burned without a chest strap or any complication would be appreciated!! :-)