I apologize in advance if this is a stupid question, but I'm an absolute Mac newb. Should I be considering Snow Leopard when deciding between refurbished vs. new? Poster(s) in this thread (http://forums.macrumors.com/showthread.php?t=661021&highlight=snow+leopard+++imac) seem to suggest that we won't be able to upgrade to Snow Leopard because they suggest holding off on purchasing until it is released. Am I misunderstanding? If we can upgrade to Snow Leopard when it is release would I be handicapping myself in any way by going refurbished? I know Snow Leopard's release is a ways off, but I'm looking ahead because I plan on using whatever iMac I choose for a few years. FWIW, I'm leaning toward a refurbished 20" 2.66 or 24" 2.8 because they should be enough for my needs.