I normally steer people away from ANY extended warranty, (even though I have been known to do one in the past). But the fact is that you are an early adopter and nobody knows at this point what the future holds, (from a reliability standpoint), or what Microsoft may or may not do if you have a problem down the road. So against my instincts I would suggest getting one.
What I'm saying is that there is no history with the hardware so better safe than sorry.