Ive think its the "love" of a mac is like a girlfriend, when you get over it, you dont really like the old one... so right now im in love with my new mac
Mine's on loan to a friend right now. I really miss it.
I love my 12" Powerbook and still don't see a suitable replacement for it in Apple's notebook line. The form-factor and 'whoa, that's tiny' effect is just perfect. Not too many laptops fit on an airplane tray-table and also have a full complement of ports and DVD burner (grumble grumble Air grumble). I've felt that the setup of the 12" powerbook was cool since the first day it came out...having the full-size-key keyboard flush from edge to edge of the computer was pretty radical when it was new.
The poster above who said that the Mac Pro/G5 towers are bigger and heaver than they look is totally correct...they have a kind of 'presence', if you will.