I have owned 2 360's. A launch Core, that I got on release day. (No issues, sold it to a buddy a year ago who is still playing it today with no failures).
My second is my current 360, an Elite. Never had any issues or RROD.
I have always kept my 360 in a well ventilated area and well maintained.
Absolutely love my 360. I own all of them and it is by far my favorite console this gen.