So I bought a brand new iMac in August because I needed something powerful enough to edit HD footage, play the occasional video game on and all of my other daily tasks. I bought the current 2.66Ghz model and upgraded the HDD to 500gb. It has been wonderful except for the fact that I have to leave it at home every day! If I could have afforded it I may have gone Macbook Pro when I made my initial purchase, but now with the previous-gen MBPs at a somewhat comparable price to mine, I'm feeling the itch to sell my iMac and get the 2.5Ghz MBP. There are some advantages (better graphics card, portability) and some disadvantages (a sliver slower cpu, half the space on a slower hard drive, smaller screen, not as knock-out gorgeous as the iMac so I am stuck. All in all, I'd probably end up spending ~$250 extra to switch. So, is it worth it? btw, any experience on whether I will notice a significant difference in the speed or performance between the machines would be appreciated, especially re: HD video editing. Thanks!