I have finally narrowed my choices down to two (or three) laptops: a Powerbook 15" or 17", or an IBM Thinkpad T41p. I am a graduate student and will mostly be using it for creating presentations, web surfing, e-mail, word processing, and watching the occasional movie or playing an occasional game. Is there any difference between the PB 15" and 17" in terms of sound quality (I think only the 15" has a third speaker) or processor speed (I know the numbers, but I mean is there any actual real-world noticeable difference)? That will help me decide between the PB 15" vs. 17". Other questions: 1. Does anyone know the contrast ratio, brightness, watts for speakers, or pixel pitch for any of the above models? I can't find this info anywhere. 2. The IBM Thinkpad T41p lacks firewire and DVD-R or RW. How important might these be for my situation? 3. Graphics: 64MB ATI 9600 (PB's) vs. 128MB Open GL2 (IBM) 4. Processor/Bus: G4 1.33GHz/167MHz (PB's) vs. Pentium-M 1.7 GHz/400MHZ (IBM) 5. 512MB L2 cache (PB's) vs. 1MB L2 cache (IBM) 6. Screen resolutions: PB 17" is 1440x900 and IBM 14.1" is 1400x1050. Obviously, the PB is closer to widescreen and the IBM is 4:3, but will there be any noticeable difference in the overall sharpness or clarity? 7. Last one, I swear! I have never owned an Apple and I was wondering how easy the transition is. Is the new OS easy to learn and is it really as much better as everyone says? Sorry for posting so many questions, but I had to type them so I could get them out of my mind. I can't sleep because I am constantly comparing the models. I am hoping to get one of these soon, my birthday is in a week and Christmas is coming also. Thanks in advance to anyone who can answer any of these questions. I better get some sleep, I have a final in like 5 hours from now.