Why one or the other
I'm always confused by the vitriol towards apple or iPad. Just because you love using an iPad doesn't immediately make you a tech idiot, fanboy, or anti-Microsoft. To me, it's just another tool and one that I find very intuitive, easy, and effective for lots of uses ... It doesn't have to take over the world.
Take note taking for meetings/classes --- the iPad with an app like Notetaker HD crushes using a laptop in ease of use, speed, accessibility, portability. It allows a paperless process in a way that's never been possible before. Doesn't mean I'm going to trash my pc ... I just don't use it for note taking.
On the flip side, consider video recordings/tutorials/training --- there are many very powerful apps on both pc and Mac laptops or desktops that just crush anything you would do in an iPad. Camtasia is my favorite as its extremely flexible, very polished and well written/easy, and really speeds up editing.
Some of it is the portability and touch-factor ... Which is an opportunity for any well done tablet. For example, I now handle probably 90% of my email reading/responding on an iPad just because its so much more enjoyable, comfortable, and productive.
I use both an iPad and a pc all day every day --- pretty much side by side, but often doing very different tasks.
