Last year when Jawbone announced the UP I thought it was a super cool idea and I got one. I wore it every day for a month or so until it broke. My UP was one of the many defective units that ended up being recalled by Jawbone. Jawbone was very cool and I got all my money back so there was no hard feelings.
I still thought the idea was great but the alternatives (Nike Fuelband or the Fitbit) didn’t apeal to me. The fitbit clips onto your clothes so i wasn’t a fan of the idea. The fuelband doesn’t track sleep and it needed charging often compaired to 10 days with the UP. The Fuelband is also big. I was pleasantly suprised when Jawbone reintroduced the UP (even thought they said they would I am always skeptical until it happens). I was in the Grand Central Station Apple Store getting a gift card for my Niece for the holidays and I saw the UP, so I got myself one.
I am excited to see how much it works. I like the ability to track sleep and activity still but they added better food tracking. I hope to write more about it once I use it a bit.