I have an iPad and it is a very good unit. It's main limiting feature I find is no real Pen input for note taking. Apps are growing daily and almost anything you can think up is there. That is going to be the limiting feature for others is available & usable apps. New devices need to have a differentiation factor.
) is coming out with a tablet that will have a pen. I think that alone makes a device like this more functional and less of a gadget for gaming and accessing information.
Android out sells iPhone (as in the operating system) in the smartphone market, the most popular apps will start showing up for both. I see the same thing happening in the tablet market as well. This has happened once before; when Microsoft Windows started showing up on all IBM PC clones and Apple OS was only on Apple machines. Granted the market is a little different now then it was in the 80s/90s. It will be interesting to see how it plays out over the next few years.
Interesting side note: Linux is finally getting into the hands of the general public, through Android.