It's time to upgrade the iMac that has been sitting in the kitchen for six years. I'm thinking about either getting a refurb low end 21.5" ($979) or a low end new Mac ($1,299). I don't feel compelled to max out on this machine, and absolute dollars matter to me. That said, I will use the new iMac for work in Aperture and iMovie, and I want to be sure that I'll have a computer that will make this work easy and enjoyable (obviously iMovie is the bigger concern). The smaller drive in the refurb doesn't concern me, but I would expect to upgrade the RAM in the refurb to 8gb; looks like that will add about $50 to the $979 cost, so the comparison is $1,029 versus $1,299. As I said, I'd rather spend less than more, and we have had the same iMac for six years...staying at the front of the curve isn't important. But a computer that will give me nice performance on iMovie is important. Refurb or new iMac?