I bought my ibook in November after dealing with a pc that just refused to go on-line all of a sudden, and no amount of help, phone consults or trouble-shooting could fix it--and on top of that, the warranty had expired the month before (But to be fair, the machine was over 3 yrs old). Anyway, I had my reservations about making the switch, having been a pc person for my whole life. I decided to check out the macs because they were priced more reasonably than most of the pcs I was considering. The smaller screen on this version of the ibook alone dropped the price significantly ($300+). As a grad student, my two main concerns were price and portability--this apple had that and more!
I love my ibook. It is not as fast as the pentium 4s out there, but it is fine for what I do, which is write, burn CDs, watch DVDs and surf the internet. The design is cool; it doesn't crash--EVER!, and it has more than enough memory to store whatever I might happen to need for the next several years. It comes with itunes to burn cds, iphoto which syncs up with digital cameras, imail, a basical email program and appleworks, which has a basic word processor among other things. I chose to install MS Office for Mac because Word is a necessity for my degree work. All of this software is more than enough for my needs.
But the biggest plus for me is the ultra-portability of this little mac, and I do mean little, in the best sense of the word! It takes up almost no room in my commuter bag, and better yet, it weighs less than 5 pounds (which is is nothing compared to my 10+ lb. dinosaur of a pc laptop), and the screen size is still very easy on the eyes even though it is smaller than most other notebooks. Plus, the battery life is incredible--I have gotten way more battery-time from the ibook than I ever did from a pc.
The only disadvantages that I have notices are 1) there aren't nearly as many games available for the mac os--but I'm not a big gamer, so this didn't matter to me. 2) you can't personal your desktop nearly to the same degree as you can with windows--no cool little icons, no personalized color schemes, no individual fonts for icon labels . . . this was a bit of a disappointment for me, but for the price difference, I got over it pretty quickly.
All in all, my friends tell me that Apple should hire me to do one of those commercials. I made the switch, and I wish I had done so sooner. It was easy, and I haven't looked back since.