Hey koko, glad to head you're jumping in. I ran up to Charlotte to Ap Store Tuesday when the MBP's came out and here I sit at home working off an Apple Express and happy as a hog in slop

. Man I love this Mac and it absolutely screams -- really see the difference with my photoshop work. This might become my workhorse Mac.
I was coming off an old clamshell iBook myself and moving the stuff is no problemo over an ethernet cable or network or simply wirelessly.
Ironic story -- day after I got the MBP, the iBook dies battery wise I guess. At first it would not even work plugged in but then I removed the battery, plugged it in and now works. Not sure what that means and if I get new battery it will be OK for da wifey which was the plan.
The Airs are really sweet and cool, seeing them for the first time the other day but were not for me -- wanted the larger screen, ports and disc drive
I'm so happy with the Pro and wish in some ways I had not waited so long despite the upgrade.
Good luck, you will not regret it.