Hi all, I'm going to be purchasing a new portable braille display soon. The ones I know of are the BraillePen 12, the Focus 14, the Perkins mini display, and the APH Refreshibraille displays. Which of hess have people used? What are your thoughts on them? For those of you who've used more than one, which display did you like better and why? It would be nice, but not required, if the display worked under Windows with System Access. Do you know if any of these do? Lastly, are there any braille displays in this category that I've missed?