Soundvision is a pretty odd prediction software in my opinion. Drawing out the venue is probably the most maddening part. The predictions are also a little less than useful when you have to do bass and main systems separately. I get where they are going with it, but EASE Focus is a little more intuitive and the results easier to extrapolate I feel. Soundvision is far from the worst though. As much as I love RCF, their prediction software is frustrating and cumbersome to use. It shouldn't be so hard to see in your head where the X, Y, and Z-axis are, but it seems in both sound vision and RCF software that Z is not up and down, X is not left and right and that Y is not back and forth; I seem to never get the markers placed in the right place on the first go around.