Let's say this is some 8 year old desktop. Both major machines would be full of trouble at that age.

I use both Apple and PC (Windows, Linux mostly) and have no big troubles at all but I know when to call it in for repair and can handle minor issues like it won't print.

The move to Apple could not happen at a better time. Look at VMWare's offering that lets you run your old PC software. The Apple is not a locked into Apple software choice!

Beware that we have one last 64 megabyte laptop left that we use to demo our software on. People comment that our software still runs fast.