If I had to make that decision again I would go for the Mac.

I have a Toshiba Tecra Centrino laptop (in fact I'm using it now as the HD has died in the desktop), while the battery life is very good, it's bigger that I would like and hasn't really lived upto the ideal I was sold.

A mate of mine has a powerbook, it's the perfect solution for a laptop I think, I wouldn't have a mac desktop given but their laptops have to be up there with the best designed objects of all time IMHO

Cheers

Cris.