But I love TOYS
Actually, it's not just love of toys, but some concerns about my health that have had me "playing" with some of these devices over the last few years. My own feeling is that most of the data is not useful, but overall I think it reduces worry because it pretty consistently indicates there isn't much to worry about. Your mileage may vary, especially if you have more severe medical problems that I do. Mostly I've concluded that I'm suffering from "getting-old-itis", but the doctors hate to say so.
Having said that, I'm in the market for a sleep meter, and the options are almost overwhelming... Does anyone know of a good database where the various models of such devices are compared on some systematic basis?