Refurbished Xbox 360 Pro Questions?

I buy all my consoles @ game stop new & used.they have the in store warranty so you don't have to ship your console off to microsoft,as long as you purchased the in store warranty,if your console crashes on you,no matter the cause,you can exchange it no questions asked,if you did not get one,I suggest doing so..people make big deal about the chip specs & RROD,and yes I've gone through 7 360's since launch,but I think they've pretty much stamped out the red ring,I've had both my current 360's for going on 3 years,and had no problems,just be good to your machine.as far as the specs & #'s not matching I'm not sure,just call game stop & ask them.either way warranty=everything covered.