I'm thinking about buying the latest powerbook revision. I have the older albook 15 inch with 1.5ghz, 128mb ati 9700, and combo drive . I can sell my powerbook for 1300 on pbfixtit.com and pay a difference of 850 dollars for a new powerbook 1.67 with an educational discount. Does the internal dvd burner, minimal mhz increase, increase screen resolution, and other updates since my powerbook warrant the purchase? I have been an avid mac user using it for digital video editing since my switch and love ppc architecture but I am afraid of the switch to intel. Also, is pbfixit.com a reliable place to sell my powerbook? Or should I just wait for the intel powerbooks?