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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I had one that I shared with all of my brothers, then I got my own one. My little brother broke the old one that we used to share (GG asshole) but my one still works fine after hundreds of hours of gameplay :D