Ok, i have had a Pacemaker Speed Graphic with the regular Kalart for a long time. But for a short time i had a Crown graphic with the top mounted rangefinder. And it seemed excellent! It has 80mm base length, so it seemed much more accurate than my basic kalart with only 70mm base lenght. So it left me thinking, should i get one for handhold rangefinder shooting. Then i started thinking about Busches Vue Focus, is it better? How long it's base length is? It would have the advantage of combined rangefinder/finder...