I'm upgrading from a late 06 Macbook C2D so upgrading to a quad core i5 is quite an upgrade. I've been saving for a while and I have to say so far it is well worth the wait. This machine is very fast! The refurb looks brand new to me. Even the keyboard and mouse look brand new. I was very nervous about all the issues with the iMacs I've been reading about over the last 9 months but so far it all seems well. Screen is absolutely amazing and it is ultra silent. Coming from a 13" screen I was a little worried (and still am) that 27" is a bit too large for me, but using it a few hours I am adjusting. It is a little bright so I might have to tweak some things. So far good luck with a refurb here.