Or interactive whiteboards, or whatever their name is.

Anyway, just wondered, does anyone have any experience of using one? We're looking into getting something for the office, but there's quite a range in prices and from just reading the blurb it's often difficult to get a take on just what makes one better than the next.

So as said, does anyone have any experience of using one that they'd be happy to share? Anything anyone would recommend or avoid?