Try listening to those files - there is a clear difference between some of them
Based on my own experiments, I think that it is possible that SAT is varying the rigidity / damping trade-off. File 1 is insufficiently damped, File 5 is insufficiently rigid, IMO. I think that 2-4 hit the sweet spot, and your preference depends on your taste. I think that I could listen to #2 all night without fatigue (well damped with good rigidity), maybe #4 (more rigid), but not 3 (least damped but most rigid).
My own wands would sound most like #2 (natural fibre composites) and #3 (sapphire), or so I suspect. Thanks for posting @2channel8 . I wouldn't have thought it possible.