I am a recent 'switcher' and I must admit, I love my new iMac! I would also love to replace my work laptop with a 15" powerbook, but I am concerned with a couple of issues. I use my laptop for MS Office applications, accessing IBM mainframe databases, my Lotus Notes email, and my work's VPN when on the road. I'll have multiple pages of these apps open at the same time, so the mulitasking abilities of the powerbook would be perfect. However, these apps are not availalble for the mac from work, except for office, which I have. I would assume that I could use virtual pc for these other apps, but I don't know how well the powerbook would perform under these conditions. Would virtual pc cause the powebook to slow to a crawl? I would LOVE to buy a powerbook, but I don't know if I could use one in my situation. Any assistance with this would be appreciated!