Thinking of following the Macbook Pro route myself. I have an iPad2 and it's a nice toy, but the Macbook Pro is on a different level altogether.
They are eyewateringly expensive and my credit card is curling up at the thought, but they are beautiful pieces of kit!
if you don't need the connectivity of the MBP, or are not using processor intensive stuff like video editing much, have a look at the Airs