The type of scale you use

I have a plain old digital scale, works well, but I notice some people are using the scales that measure to the 10th of a pound. Also I have seen scales that advertise (on the shopping channel awhile back) that tell you what your weight is, and the amount that is water weight. My question to all is , what would you recommend? Do you weigh in every day? What type of scale do you use? Do you weigh in 1st thing in the morning, or end of the day?