Well there are Xbox fanboys here that will praise anything that Microsoft does because 'muh halo.' My experience is that the xbone is a pricey piece of tech trash along the lines of a Jensen headset that one buys at Walgreens for $14.99. I got one right when it came out, within a few months, it pooped out and MS wouldn't repair it without an additional $129. My controller broke as well
That being said, this is a refurb so it's already been repaired. Due to this, it's feasible that you could get a year or so out of it as long as you don't do that much with it. I'd definitely recommend getting the best possible warranty if anyone does get one.
Yes your Xbox may have been broken, but the real question is who broke you inside?