Hey, I am looking into buying my first mac sometime fairly soon. I'm going to be a high school senior next year, so I could hang onto my old dell through the end of the school year. What I'm wondering is, will the Nehalem update be significant enough to wait six months? Like I said time is not a big issue, so if the new processors are going to be a substantial improvement (a la core 2 duo) then I'd wait. Also, would it hurt to just wait anyway and if Nehalem isn't a huge improvement get a refurb?