I've got a new MACBOOK duo core. . .got rid of my Toshiba with duo core etc.
I found the MAC is better for what i need. . Photo's, Music, Editing, E-mail, add on programs.
I run microsoft office purely so i can exchange files via e-mail with PC users.
Also run parrallels for windows because i also like using windows.
In my view i've got the best of both!
JF