Hi all. I have a 15" MBP that will soon turn 3 years old. It's been my trusty companion and I've been satisfied with it until I moved on from a 6MP Nikon D40 to a 18MP Canon T2i last year. Editing large RAW files (+ Photoshop layers after another) isn't exactly speedy on this computer. I was set on buying another 15" MBP once it is refreshed, but the impressive performance of the 27" iMac is slowly winning me over, especially because I don't carry my MBP with me often and if I do get a new one, 95% of the time it'll be on my desk connected to an external monitor on clamshell mode. Here are my main questions: To those who own the i5 15" MBP + 500GB 700rpm HD for photo editing, do you find that it's fast enough for editing large RAW / PSD files? To those who own the 27" iMac, how's photo editing with the glossy screen? Please note that I only have a small desk, so I can't have another external monitor with me. I'd appreciate it if you can share your experiences and advice.