I'm glad some people are happy with their customer service. And - it's true about installing to the hard drive. less heat and less wear and tear on the dvd drive. well, some could say that the wear and tear is then on the hard drive instead. that's another discussion.
As for me, I have had a 360 die on me and I sent it in for the red ring fix. I got it back and then it started to do the same thing the red ringed 360 did right before it died. You would see red and green blotches on the screen. It would continue for a few minutes and then freeze. This time, instead of displaying 3 red rings, the green lights would power up normally and you would have no picture, just sound coming from it when you turned it on.
I called them back, saying this shit was the same thing/problem as the red ring. They weren't buying it, they insisted it was a different problem and I was one week out from their "general" failure clause from their refurbished box. I was so pissed. I tried to heat/cool cycle the thing to induce red rings... I stuck chopsticks in the fan vents to overheat the 360 and then put it in the freezer to cool it down rapidly. The damn thing did not die.
and just as luck would have it, after i got rid of it, they extend the replacements to cover e74 errors, which is the same as no video, just sound. in serious cases of e74, the whole board must be removed and the soldier "re balled," which only specialized equipment can do... but it is a result of the red ring problem. so cross your fingers this doesn't happen to you.