Thanks for doing the test!  I ran one we haven't cut yet.  Not super scientific.  I just ran full passes in a field from 200,000 down to 100,000 in 25,000 increments.  To stand in the field and look at it now you couldn't tell me which end is 200 and which is 100 if you didn't know.  Anxious to get out there and weigh them.  These are in conventional till on 30" rows.  Probably ought to run some in no-till next year.