I am debating whether or not i should trade in my MPB 2.2 from last year for a new base model MBP 2.4, mostly because of the graphics card. Is there enough of a performance difference to make this worth my while? Also, does anyone have a rough estimate of how much i can sell my MPB 2.2, 160 GB HD for? It has a scuff on the edge which is very noticeable but other than that its in excellent condition. Thanks!!