I'm typing this from a G3 800mhz iBook. It's a swell computer, and I'd definitely recommend it over the iMac. The portability factor is so sweet. I'm on my bed with my head against the wall and the book on my lap. I don't think twice about taking the comp anywhere with me. It's awesome. I'm only upgrading to an MB because I need more HD space and a faster processor to play all my vids. Other than that though, this is a great piece of gear, and if you're just going to be surfing the net, typing documents, listening to music, etc, it's a terrific deal. Just make sure you max out the RAM, as said earlier. I've got 640mb in mine, and it runs Tiger all right.