For linux just avoid anything with an ATI graphics card and go with nvidia. ESPECIALLY if you want to attempt triple booting MacOSX\iATKOS on it.
I've gotten good mileage out of a Dell XPS Studio 16 w/ubuntu but can't recommend it due to driver issues with wireless (avoid intel5100) and graphics (radeon hd3760).
If I was buying a new laptop I would search the hackintosh and iATKOS forums to find models that can install OSX out of the box and triple boot it.
After that, figure out exactly what resolution\size pixels per inch you want the display. I like 1600x900 for laptops myself. That should narrow it down to only a couple models.
I have a Dell Studio 15 (laptop) and while it's a fairly nice build I'd have to say stay away from Dell if you want to run Linux - when I started using Ubuntu (around 8.04) I had so many driver issues it was silly. 10.04 hasn't been bad though (yet to test out 10.10).
I've gotten good mileage out of a Dell XPS Studio 16 w/ubuntu but can't recommend it due to driver issues with wireless (avoid intel5100) and graphics (radeon hd3760).
If I was buying a new laptop I would search the hackintosh and iATKOS forums to find models that can install OSX out of the box and triple boot it.
After that, figure out exactly what resolution\size pixels per inch you want the display. I like 1600x900 for laptops myself. That should narrow it down to only a couple models.