Previous (top of line) iMac $1699 http://www.macmall.com/p/Apple-iMac/product~dpno~8183585~pdp.gcbafci New (mid-line) iMac $1649 http://www.macmall.com/p/Apple-iMac/product~dpno~8535499~pdp.gfgcadg This will be my first mac, need some help here. I have no need for thunderbolt, so that is really not a concern. Which one is the best choice? Specs look so similar, it is tempting to go for the older model. I guess it comes down to what is better, right? ATI 5750 1GB vs ATI 6770 512MB and the new i5 2.7ghz vs older i5 2.8ghz Also, Facetime is possible with either model correct? seems like just software update.