Cannot wait any longer ! I finally made the decision of going refurb ! Here are my two choices for mailing, music/video/photo library editing, web browsing, office in a normal use: iMac 27 i3 3.2 iMac 27 quad-core i5 2.8 Is the 250$ difference really worth it? Will I see a major upgrade ? What about future proof (3-5 years?) Thx.