You can't do a full OS tablet PC that can compete with the iPad. It's undoable. Now I have some doubts about how deeply many poster here really consider things,.. But a full blown tablet PC is not a particularly good idea. It will be heavy, slow, and run out of batteries immediately. And if you try to have it in your lap or the couch, it's going to overheat because you block something. I don't want some shit like that. That would be unusable. To be useful, it has to be really lightweight so I can bring it around. It has to have a real 'on'-switch, not windows boot. It has to start immediately when I want to check something. And it has to have very long battery life, so I can actually use it in practice.
Now all this comes from a guy that tries to live with carrying a notebook PC for long periods of time, and depends on batteries. And one who foolishly bought a powerful (C2D + discrete graphics) notebook at first. After having learned to hate that one with a passion, I made a much better choice next time (singlecore + good integrated graphics), much lighter to carry around, much better real battery time, allowing amongst other things a much brighter and better display on battery. It even has as good performance, because it draws less power. What I'm getting at, is real user comfort, real usability.
This thread sound like no one else have ever tried this experience? You all dream about fullblown, portable, handy computers, and seem to have no idea of how annoying and painful it is, to actually get some real practical use, from a machine that attempts to be all that.
No, the iPad is perfect. For anything it can't do, I'll want to use one of my desktops anyway. ...Or even my notebook laptop.
That doesn't mean there won't be other 'perfect' tablets from others. But it won't be those trying to be replacement computers.