prob anything with a dual i7, quad i7 or dual i5 and a good amount of ram....photoshop isn't the problem....my 2.0ghz core 2 duo macbook handles cs5 no prob at all...
"handle" is all relative, as is "light". I've used LR4 on my wife's Samsung 9 (macbook air equivalent), and it works just fine, but sure is annoying if you're used to an overclocked desktop beast. This looks pretty awesome if you ask me, especially with the 1080 IPS display: http://tbreak.com/tech/2012/06/asus-zenbook-prime-ux31a-review/
Just look for the lightest laptop you can install or upgrade to 8+ gb of memory. Pretty much anything with a dual core or better processor will fly with that much memory.
inku - i had 2 envy's that had problems displaying reds, not all reds, but in general - many of them appeared orange toned. sent it back to hp, got another one, same thing. it IS the mcb's evil twin though, couldn't be more alike.
MBA 11 inch with 8GB of RAM and 512GB of space. It fits almost anywhere and you can carry it tethered to shoot directly from camera to laptop. Optimum software mix is Aperture with Photoshop CS6 for fast loading. I'm somewhat tempted to go this route since it's so effective. I still carry an iPad around and can use EyeFi for shoots but it's slightly slower. Also iPad is limited to JPG edits on RAWs so I'm hoping Apple releases Aperture for iOS sometime in the next 4 years. I may switch to the MBA since it's just more efficient for shooting but the iPad is good for nearly everything else.
IPS screen, i7 (not some dumbed down low voltage version), SSD
Or you can just buy it with a hard drive and add a mSATA SSD after.
Fast, light (3.5lbs), 13" screen. I'm in love with mine.
Oh, and unlike another certain brand, you can tear it apart and repair just about anything with just a screwdriver. I spilled coffee on mine and took apart the entire laptop (including screen) to clean it up. Still works perfectly.
