i love my clamshell 300 mhz ibook from 1999...it worked 100 percent for a full five years until the modem broke
it's still good for word processing, light graphics (i have photoshop, illustrator, and pagemaker on it), and older games...if i do need to resort to heavier duty tasks with those adobe products, i have a power mac but it rarely goes that far
the ibook is relatively quiet compared to a dual g4 power mac which is very loud and not fun to use for everyday tasks...i only like to use the duallie if i need the horesepower
i have never owned or used the newer g3 or g4 icebooks and i have heard mixed reviews on the g3 icebook models yet many people still swear by them
my next mac will probably, unfortunately, be some desktop since in five years of using laptops, i found i rarely ever leave the house with them so i can't justify getting a laptop which has a slower hard drive, smaller hard drive, and smaller screen than an equally appointed mac desktop for the same price...and with desktops, you can expand easier