I'm considering selling my 2.4GHZ 2GB DDR3 Macbook Pro for a 2.53GHZ, 4GB DDR3, 500GB Macbook. I know the graphics would be worse, but would the faster CPU and more ram help a good amount? I do a lot of CAD and such but I'm wondering if the extra ram and CPU power would counter-balance the graphics power on my unibody Macbook Pro? I really really like the new 7 hour battery life and the smaller size would be nice. What do you think? Thanks a lot.