I agree with many of Steve’s points here, but I’ve had much better luck with my battery life. I’m getting 7-8+ hours easily on a charge – perhaps because he got the special order 1.3GHz model while I schlump along with the 1.2 model.
My MacBook Pro is now my desk machine and I use it for my photography workflow. Just about everything else is done on my MacBook. I really like this little guy.