Any thoughts? I am very close to buying a 20" iMac to replace my current iBook. Currently there is a 20" 2.66 GHz the is refurb and selling for 1299 compared to buying it new for 1499. There is not much difference between the two machines and it looks like the refurb deal has the same warranty. Has anyone had good/bad experiences buying refurb direct from Apple? The shipping is even free.