Originally Posted by garywitscher
Could you post the brand and model? Or maybe a link to the Amazon page. It would be nice to know exactly which pens work with the DR800.
All 3 pens should work. It doesn't make sense to get the eraser pen since the Irex doesn't support the eraser function. So you have the choice between the slim pen (presumably the same size as the one that came with my 800SG) and the clip pen on the right (which is the one I got). The clip pen seems to be the same size as the one that came with the European 800S.