My last Mac was a Powerbook 1.67Ghz G4, I've not used OS X much in a few years but still update my old Powerbooks occasionally. I've been using Thinkpads for the last few years. I purchased the 2.53Ghz model, so far here are my comments. 1. Very big. I mean waste of space due to the screen bezel. 2. Screen is very nice, no glare, my first glossy screen. 3. Resolution is not very impressive, I have smaller laptops with higher res. 4. Keyboard is fine. 5. Trackpad and multitouch great. Trackpad does need a nudge sometimes as it does not register all input. 6. Don't like the sharp edge on the case, no beveled edge like I'm used to. 7. DVD is very loud. 8. Speakers are ok. 9. Heat is comparable to my other Laptops, but I don't push them much. 10. Screen lid is very loose, any movement will change the position, not what I'm used to. I'm replacing my T60p and X300 with this so I'll be installing Windows Server 2008, any recommendations?