PSP Go: Preowned or Brand New?

I'm deciding which one to get (yes I prefer PSP Go, no ripping on me for it). Should I: A. Sell my iPod Touch and buy a preowned PSP Go from GameStop or Craigslist OR B. Sell my iPod and Guitar and buy a brand new PSP Go. I dont know which one to buy, because if I pay for a new system, for a limited time, I get SOCOM, Rachet & Clank, and LittleBIGPlanet for free. And if I get preowned, I can get a system sooner than the brand new, and save up for new games. Please be serious when answering this, I don't want answers like "I don't like PSP Go" or "Get the PSP 3000 instead." I do NOT like UMD's and do NOT like the bulk of a PSP 3000. The PSP Go fits my gaming style more than the 3000. So please, be serious.