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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Edited by Ahhsenberg: 4/8/2014 12:42:33 AMI've only had one problem with the four of them that I've owned (I only own three now). My first Xbox 360 (first model) got the RROD and I sent it to MS to get it fixed back in the day. I later ended up giving it away to charity when I upgraded to a newer Elite model.