I have been running OS X for nearly a week now, and it's very good. No problems what so ever, except that my printer doesn't work, but booting up in OS 9 is a breeze, and I have had NO problems what so ever ! Amazing !
I have installed OS X on a Powerbook firewire with 192MB RAM & it works excellently. I can even use my Outlook Express through classic & still communicate with My cable connection to the net.
Still haven't got myself over the printing problem as yet, but am weorking on it. Also would like to play DVD's as I use the notebook for this feature while travelling a fair bit.