Depends on what you are doin'
If you are just going to be surfing the web, doing email and maybe burning a few cd's, go with a cheaper 12" ibook, the screen on it should be the same as the powerbook, power doesnt matter with these functions, battery life should be better too since your not running a performance engine. If you will be using photoshop (hell on a 12"), imovie exporting (or any video conversion for that matter), or say compiling large packages off fink often, go with the powerbook. But for normal "consumer" use, the powerbook isnt economically feasable, even at it's new lower price. Just some thoughts on it, research and decide for yourself what you want to get, cause it is you that will have to live with your decision either way.