I am looking for a cheap but capable portable mac. I am trying to decide between: G3 800mhz 640RAM iBook $299.99 G4 400mhz 256RAM Powerbook $499.99 I really don't do anything but use the internet, word, email, chat and itunes. Which machine would be better? I know that for only $200.00 more I could get a refurb ibook from apple w/ warranty but I just dont have $200.00 more and really need it at the moment. So just between these two systems which would you choose?