I'm sporting a 5 year old PowerBook G4 17-in, and with Snow Leopard only supporting Intel and a price drop, I think it may be time to upgrade. I'm very much eying the 13-in for various reasons, but my biggest concern would be the reduction of screen real estate. Looking at it in the store helped get an idea somewhat, but I feel like until you get the computer into your homespace, you really can't experience the difference. My question is, has anyone here gone from a 17-in to a 13-in? What has your experience been like with adjusting with the keyboard space, speaker grills gone, etc.?