I got my 360 elite in 2007 and it only failed the day Mass Effect 2 came out (Crashed during gameplay) and due to the error being an E74 error I had it fixed for free and no problems since.
So in all I have had the 1st 360 I ever owned.
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11 I've shared all but two of them with my best friend and truth be told over half of them were broken ones we fixed. Only one of them is the new halo 4 model. The rest were original or "elite" and one was a halo 3.