I do wonder though, if it will actually be the best solution. I have been thinking on this issue for a bit since I really wonder if we are doing it correctly.
What if you got a normal whiteboard and point a camera at it, get a document camera, hdmi cam for video conferencing, and an ATEM mini[1]. It might be cheaper than a lot of smart board options and a whole lot more versatile. I get the feeling that setting up a home office is going to be different in the telecommute era.