I'm going to go to the Apple Store soon to buy a 15" MBP and I'd like to know if I should get the base model or the mid-level model. I do some video editing in iMovie and use Photoshop quite a bit as well as Lightroom and iPhoto. Not a professional though. I'm a high school teacher that teaches desktop publishing along with digital media (audio, photo, video). Is the mid-level worth the $250 extra it'll cost me? Concerned about the 9400m vs 9600m GT. The hard drive difference is there, as is the 2.66 vs 2.53. Quick responses needed, because I'm going very soon! THanks!