After reading around on this site, it's still unclear to me what would be functional as well as economical for my needs. I've resolved to get a new laptop as well as the 24" ACD. The question is which notebook would be powerful enough for me. I'm not at all concerned with the computer as a status symbol, and I'm only mildly interested in it as an aesthetic object. I'm a fine art photographer who needs to be able to easily run Photoshop CS4. I am not at all concerned with work flow. I want to be able to hookup a Nikon, scan MF negs, and manipulate images. I'm fine with the 13" screen on the Macbook since I'll have the 24" display, nor am I disturbed by the lack of the expansion slot. The question is the disparity between the 9400/9600 and how important that will be for me. How important is it? Will photoshop run nicely on the 2.4 MB with 4 GB ram? Thanks for your consideration.