Just guessing but i imagine a new 360 would last longer than a used one

I just got my Xbox 360 back from Microsoft they said to make my wait shorter they sent me a "different" 360 is their anyway for me to know if it's a new orused 360, since i sent my 360 to get fixed (3 red rings) am i still under warrenty until 3 years from launch which they said or is this it?

Thanks fazio93 you where right and twotimestwo their only fixing the three red rings you'll have to pay for other problems

I got the three red rings of death, i heard of the extended warranty but since i've had this console since launch i don't have the receipt anymore does anyone know if Microsoft will still accept and fix my 360 (the MFR date is 2005)?