I just spent a few minutes looking at some of my planter maps in Farmworks.  20/20 and Esets.  Field summaries show overall singulation of 98.9%-99.3%.  However, in most cases where I click on an actual data point, it shows singulation from 99.5-99.8%.  There are lower singulation values in some places where I would kind of expect them (rough spots, terraces, near the endrows) which I think lower the field summary in comparison to what the planter is doing the majority of the time.   I have a few Wavevisions on the planter, but have basically just been buying them to replace failed sensors.  The price is a little easier to swallow that way.  I will say the rows with WV are superior on windy days for sure.