Right now got a friend messing with the one I ordered. the model I ordered is the single core LE1600
From his impressions, the stylus is kinda wonky, since it only has 1 switch...I noticed wacom produced a duo switch stylus with eraser for about $50.00 so that might be an option. The reason for the why it's a bit "Wonky" is because the rubber grip and switch swing around and you have to fumble/feel for the button the grip covers.
Why a Duo Switch recommendation? Being able to program 2 buttons works really well since many you can hotkey. One key I think is important for one switch is a Tab or Pan button. Since many programs default to TAB as full screen mode you can get quite a bit more real estate since Tablet PCs have relatively small screens. I could of course script it with Auto Hotkey and Smart GUI to have it as a floating button. Panning would also be something frequently used due to "screen real estate" .Frequently used switch is the "Eyedrop tool" when painting so it's second nature. Having one button makes it a bit more cumbersome.
From an old post Shogmaster has said that UD series pens, Intuos 1 Artz II and old UD model cintiqs will work on this tablet PC.
He said he's experiencing lag, and I suspect it's a driver conflict with certain programs so I need to make sure he has TabTip tamer enabled to cope with it or he may have a driver conflict. (I get to play his IT often even though we're on different coasts).
I'd recommend putting TabTipTamer as a program startup if you're a tablet PC user. In XP on the the Folder window enable search. Then type Shell:Startup (top part like the "address bar") which will take you to where your startup programs will be. Create a shortcut to TabtipTamer and place it in there. Now whenever you start up the tablet it will enable that program.
What we did find out is that Wacom's Tablet PC drivers do not work. You need to install the Bamboo/Graphire drivers to enable pressure sensitivity. I think Wacom should update the site/link to drivers since they haven't touched them since 2008.
Now, yes there is definitely a difference between 256 levels of pressure sensitivity and 1024 (or 2048) but pressure sensitivity is pressure sensitivity which you do not really get with Capacitive touch tablets. It's enough levels to get the job done.
If Sai gives you lag, per Portus' suggestion - change the stablizer. It was on 3 by default and raising it to 15 for some reason corrected the lag, and moving it to different settings it's not as bad.
In terms of interfaces with software here's a rundown from what I see.
Sketchbook Pro: king of Tablet PC interfaces. No surprise since it was made with a tablet PC in mind. The ability to save as a PSD makes it good since you can just easily port the file over to your regular PC once you get the basics down and finish off your drawing.
Artrage: A lot of ArtRage's interface is similar to sketchbook Pro, sans gestures of course. Low resources and just plain fun on a tablet PC.
Photoshop - seems to have the least friendly interface for a tablet PC. This is at least true with CS.
Painter. For all my complaints about the ugly GUI, Painter seems to have some better controls when it comes to working with just a tablet PC screen (sans keyboard). For example, Painter's document window excels because the controls are easily accessible on the bottom. You have a slider to adjust the zoom. The Navigation window (while we do still want the ability to have a separate adjustable one) makes panning around the document extremely easy.
The other thing is how we can make palettes for favorite brushes in Painter, this also goes for commands which make it a lot easier to work with. Undo and redo commands can be put on that dock. ... now if they had the "dock n' tuck" interface for their palettes it would be beautiful.
Easy Paint Tool Sai - also well done interface for a tablet PC. Most of what you will need is on the interface.
I'll give more updates. I went with the LE1600 btw as the "Test" couldn't go for the $700 ( I tend not to spend over $500 on laptops...so I'd rather try a lower end model and resell it to someone in my area than spend more and not like it at all and deal with patrons on ebay) ones right now but since LE1600 items (cept for RAM irrc) are pretty much swappable with the LE1700 models less items to have to replace. For example got the extended battery which works on both models, as do those keyboards that latch over the front of the slate.
As far as speed. I'm not doing 3d work. I am an illustrator so really, if people can work and sketch on a DS or iPad this really isn't much different.
Hopefully this info would help anyone out. Also I highly recommend a View Anywhere screen if you're going to be outdoors or moving around without an adapter more.
One question for some folks. I noticed people using gaming pads. How about one of those number pads instead for programming shortcuts?