Mimio is a comparable value that's helped by its superior feature set, but I found it less reliable and somewhat inconvenient to handle. Either device would serve well anyone who regularly conducts meetings and ad hoc presentations on the road. Here's a company virtually built on the premise of collaborative work. The following is directly from their website. Collaboration is a continuous cycle of thinking, doing, and learning collectively.
Collaboration yields better solutions, faster.
The times are too fast and complex and the players too interconnected for any organization to do it all. Or go it alone. Collaboration the form and essence of the Net is the engine of business growth. Collaboration optimizes organizational capability and marketplace strength by creating and uncovering powerful new strategies and relationships. In collaboration, the speed of ultimate execution matters more than the speed of any stage leading up to it.