i agree - sort of.
I own a lime iBook, and I have typed every word of my thesis to-date (and all other related history papers) on it, opting for its keyboard over the one that came with my G5. but while I am extremely proud of it, (and brag about it to mac fanatics 😉 ) I do not like to use it too much in public. in libraries and archives is fine, but in a lecture or if I'm giving a presentation or seminar, I feel reluctant to pull it out (quite the opposite feeling I had when I owned a powerbook). i'm not sure why i am reluctant, maybe it's the plastic feel, maybe it's the fact there is an embarrassing pen mark on the cover from the previous owner 😡 but the point is it's a fantastic machine, just not very professional.
n.b. Tiger on a clamshell is wonderful, the screen is gorgeous still and I manage to install and very fluidly run many apps (such as iWork) that are supposed to require higher-end machines. all in all, I'm in love 🙄