One device I found was the Belinea s.display 5_22, which is an hybrid touch screen/tablet. The device looks very nice in the specs, but the problem is: how well would it work with Linux? After a long time of browsing through the net, I came up empty and the technical support seems to know about their own product less than I do. They couldn't even provide information about what controller was being used or even the USB IDs. I'm still trying to convince them to provide more information about it.
There is also the similar Wacom Cintiq line, but those, besides being only tablet, is also as much as three times more expensive and aim at the graphics professionals.
So, my question to the audience is: What is your experience with this type of devices under Linux and X and which ones would you recommend that are available in Europe?