I'm a lifelong mac user so I'm naturally looking for another mac to upgrade from my 2nd generation black macbook which I'm selling to my cousin. Two part question here: For those that have been through college already, do you think the extra power and screen size (13" is killing me) is worth an iMac, or am I better off sticking with the still somewhat powerful and a lot more portable MBP? Second, when to buy? I have until mid-March to get my laptop to my cousin and ideally I'd have a new computer before that so I could transfer all of my files without an intermediate external drive. I know they usually make announcements like this in January but it seems that all I've been hearing is about the supposed tablet, and the possible multitouch iMac in the second half of this year (which is unfortunately too long for me to wait).