And unfortunately I bet all these tablets will follow the disturbing trend that is happening in the convertible/slate tablet PC industry - namely the best screen you will be able to get is only WXGA (1280x800).
Why is that a problem? The whole point to a tablet is to use it in portrait not landscape mode. That means you are really looking at buying an 800x1280 screen.
Try this - set your computer to SVGA (800x600) resolution and start playing around with your programs. Most programs are horrible at 800 pixel width, and many require 1024 pixel width.
Adobe products are horrible at 800 pixels wide, many websites are no longer optimized for 800 pixel width (all those side bar ads... oh, and sometimes navigation menus), ArtRage and Corel Painter are designed for greater width, and even office products are not ideal in only 800 pixel width.
If you think I am nitpicking - it is very unnatural and unstable to hold a tablet in your arm in landscape mode. However, in portrait mode is is more like a pad of paper. Try it - get out a paper notebook, hold it in landscape mode, and start writing away.
The only thing that really works okay at 800 pixel width in portrait mode is Windows Journal. Not even OneNote (with all its possible side tabs) is ideal for only 800 pixels wide.
I guess what I am saying is the manufacturers are really missing the mark when they abandoned SVGA+ for WXGA. Sheesh - they could at least of made a tablet with a 14" WSXGA+ screen. Seriously, at $80 for either ArtRage3 or the academic version of Painter 11, laptop makers should bundle these with their tablets and a decent screen resolution and market it to artists: "How do you fit thousand of dollars of art supplies - acrylic and oil paints, conte, charcoals, pencils, pens, watercolors, chalk and oil pastels, ink and calligraphy pens, spray paint, and deco appliques along with canvas, cold pressed paper, handmade paper, rough charcoal papers, and much more - into a small backpack? Simple, buy our 15" WUXGA (1920x1200) artist tablet PC for a mere $2000! Not only will you save money on art supplies and save your back, but you'll never have to deal with nauseating fumes or messy cleanup again! Also great for students to take computer notes in chemistry, physics, or biology - don't use a laptop and a piece of paper, draw right on your screen... and make your professors happy by showing them you are taking notes rather than reading Facebook."
(BTW - the iPad is the netbook of the Tablet PC market... an underpowered machine that has its uses, but definitely not for a hard-core tablet user who doesn't want to spend $2000 on a 1600x1200 20 pound Cintiq 21UX.)