monitors and other information PLZ

I want to get a fitness monitor but not for when I am only doing extreme workouts, I want one that goes all day/night even when I am sleeping. What would you suggest? I would like to have one around the clock so i can see how my day to day life works out calories wise. I am tired of all these websites saying you need this no u need this amount of calories so on and so forth i figure the best way would be to wear a monitor for a week to figure out my actual consumption.

Anyone have any good monitors they use around the clock if so what type and a location to read reviews/ur own review