Hi, my name is Conrad, and I now own an iBook G4. ("Hi Conrad.")
I'm an enterprise network manager in Hendersonville, live in Antioch, manage 200 Windows workstations, 50 Windows servers, 15 Macs, and an Xserve G5. I recently requisitioned a laptop, and was asked to choose between a Windows laptop or an iBook, and I went with the iBook.
I'm finding that I like and dislike parts of OSX in much the same way that I like and dislike Windows, but the Mac folks upstairs felt a bit neglected (none of them are willing to launch Terminal without a unix ninja present) and I really want to run Cubase and Reason on The One True Audio Platform, so yeah. I think I made the right choice.