I am loving the Fitbit.  Really like the sleep tracking.  I am averaging 6 hours and 51 minutes my first full week with it on.  An 8 hour lazy Sunday sleep with an hour and a half nap in the afternoon bumped it up a bit.  It tracks how much time you’re in light, deep, and REM sleep and compares it to the average for men my age.  I am always slightly lacking in deep sleep when comparing but get more than enough of the other kinds.  Might have to drink less coffee at night lol.