I'm going to speak up in defense of refurb, for a moment. Having repaired thousands upon thousands of computers for a major computer company (Dell, if you're curious), I can say with complete sincerity that a refurbished system will more than likely last much longer than its "new" counterpart.
Aside from building my own PC, and my current PC which I bought for college 4 years ago, I purchase refurb. It lasts longer, its issues have already been ironed out, and you can get it cheaper than new.
“I've noticed that about your people, Doctor. You find it easier to understand the death of one than the death of a million. You speak about the objective hardness of the Vulcan heart, yet how little room there seems to be in yours.” - Spock, The Immunity Syndrome
Leonard Nimoy: 1931 - 2015