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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2. First one got the RRoD. I was going to send it for repairs, but they asked 250 euros for it, so I decided to buy a new one. Second one was the worst deal I ever made: Just before it's price lowered to 259,99 (One week before, to be precise), I bought another one for 350 euros (I guess that was the price?). Later, after another RRoD, she was sent for repairs (this time for free) and came back stronger than ever: untill now, nothing has happened.