Gotta say, I've been playing z star all year. Been struggling with iron distance so a friend told me to go back to duo. Got my distance back immediately. Did multiple on course tests, and while some were even, there were some holes where I just couldn't get the z star to the green. Tried as many as 5 balls on some approaches.
Z star also feels like eating a jawbreaker in comparison.
I'm going back to duo. No need to further test for me. I know not everyone can do a real ball test like this but if possible you should.
Low single digits. Swing speed at 105 or so. Just wanting to say if soft balls work for me and my speed they should work for most people