In the process of buying a new 24" iMac. I am a big fan of refurb items from apple. Which one of the two should I get and why? http://store.apple.com/ca/product/FB325LL/A?mco=MjE0NDk5Mw http://store.apple.com/ca/product/FB418LL/A?mco=MjE0NDk5Mw One is 2.8 ghz and the other is the new 2009 2.66 ghz. The 2.8 has the ATi card and the new one has the Nvidia card. Sure the Hdd is double and so is the ram but I am leaning towards the older 2.8 ghz. Suggestions? Thanks!