there may be a need for both types. we dont know as well as the people from both companies. could one application be superior in certain situations, such as terrain or weather or space. one of the first rules in a sucesful buisness is to have a diverse product line.....companies with more then one product can sell to more customers...the knowledge of both types can be nothing but good. they will both be competing with open systems, now we can do it both ways up and down...open cant