My friend has a few Macs and recently bought a Toshiba to have a 100% Windows machine for software development for work. Now he regrets it because he has to get it repaired, and it is a 4 business day turnaround. He is without his laptop for 4+ days. He feels that if he had gotten the Macbook Pro he could have taken it to the genius bar for repair, and walked out with a repaired laptop or a loaner. So to him the extra money would have been worth it.
I want an ultralight laptop so I will probably wait awhile to see what will come out next year. Meanwhile I am building a new quad-core PC with 4GB RAM to be my server/media processor.