I am considering getting the refurbished MB with the 9400m, but I have a few questions. Is $759 a good price when compared to the current offerings? I don't do anything intensive a little photoshop and stuff here and there and maybe sims every once in a while. I don't believe I would benefit much from the 320m. Correct? Is the plastic good quality or would aluminum MBP be a much wiser investment? I will be getting a printer either the HP Photosmart C4680 or the Canon PIXMA MP490. Can anyone recommend one over the other?