I guess my concern is the same issue I had with ever leaving MS behind, all the software I currently have. I am not sure how Windows 8 works, tablet or otherwise but I was under the impression some software is not compatible without patches or whatever?
As for laptop I am, sadly, going to have to upgrade sooner or later as this one is getting old, over heating more often, and is outdated enough it can't keep up with my work. I might have to just cave and get a Mac laptop but I don't know yet.