I did the switch 2,5+ years ago and am not looking back. I'm still working off my first laptop and love it. I was planning on getting a new powerbook end of last year but am holding out a while longer. I need to be certain that macromedia works with the new intel chip before I do the leap.
I played with an intel imac at the namm show lasy month, and geesh! It's fast.
Have a cooupe of linux nutters in my aquaintance who have moved over to Mac lately.
I don't care if a PC is cheaper. I love my Powerbook. I love mac and there is no way I'll go back to running a PC more then as a test machine for my websites.
/E