Probably this question has been asked many times but I still would like to know! I am ready to switch to Mac and am considering buying a 15" powerbook. It's not just because of the switch but also the fact that my pc laptop is (really) falling apart! So it is urgent. though with all the rumors I read, I am more and more scared in buying one of these and am afraid new powerbooks will be available very shortly! I am currently I would appreciate your comments on this! Should I just go for it? or not? help!