i just switched about two weeks ago. i was very cautious about switching, i bought the 12 in. powerbook as a test run. i needed a laptop for travel and giving very long presentations using powerpoint. usually when i travel and give a class i just bring the laptop and the projector and everything is aleady there for me. so i was most nervous about combatibility issues with the hardware. i taught my first class with my mac on feb.14 and it went flawlessly. the only thing i need to do now is get my wife hooked on this little bugger so when its time to replace our pc desktop she will agree we need a powermac. now i take this little powerbook with me everywere, i just love it. i use it all the time its just so light and portable its no trouble at all. i am also very happy with osx it is very nice once you get used to the differences in windows it makes more sense. i am officially hooked.