Think they sorted the 360 overheating a good year ago. It was mostly the first (maybe 2nd) gen/batch that had the issue.
Based on what I've read I think the RROD problem is somewhat overstated these days. I've had absolutely no problems with mine since I bought it a year and a half ago. However my experience is hardly representative of all users.
Mine is from the first batch and it's still running, DVD is noisy as fuck but i don't use it as a dvd player.