Fitness trackers

Is it just me, or has anyone else been curious about all of the new fitness trackers out there?  I just started a new job that involves me running around the ER following a physician for 8 hours a day, so I'm really curious how many steps I'm taking and how many calories I'm burning.  There are gadgets at all price points, from basic pedometers to high-tech devices that track everything from your eating to your sleeping habits.  Here are some fitness trackers I have my eye on:

1.  New Balance Via Mini Pedometer

2.  Fitbit Zip Wireless Fitness Tracker

3.  Polar FT4 Heart Rate Monitor

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4.  Fitbit One Wireless Sleep + Activity Tracker

5.  Jawbone UP   

6.  Nike+ FuelBand

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