If you are laying in bed and working then get a Modbook Pro:-
http://www.axiotron.com/index.php?id=modbookpro
You have the option of having it pre-loaded with Vista or OS X.
You can run Windows perfectly on a Mac using bootcamp.
Not forgetting the beautiful displays Macs have too.
You are seriously breaking your own back if you don't go with Apple. Their operating system is far superior than any other commercial OS on other platforms.
Plus the new Macbooks come with the NVIDIA Geforce 8600M GT graphics chipset.
You can read more about this technology and how it takes advantage of Adobe's CS4 suite here:-
http://gizmodo.com/5064946/nvidia-qu...e-cs4-up-to-11