At what point do most people feel it is time to upgrade their MacBooks? I currently have a Black MacBook Core Duo which I have absolutely loved (save for the lack of a graphics card) that I purchased about a week after they came out. I did upgrade the ram to 2GB and the HDD to a 160 GB drive, and honestly do not have any speed issues with the laptop. My main motivation for upgrading is that I have regretted not purchasing a MacBook Pro for both the graphics card and the backlight keyboard pretty much from the time my return period for the MacBook expired. How great of a performance gain would there be in the current Pros/ or the projected Penryn Pros in June for real world applications other than gaming.