I bought a set of Evahs last fall. They were intended for my Kay,turned out the Kay didn't like them at all. Too heavy and stiff, they seemed to choke the resonance right out of it. BTW Obligatos seem to be the Kay's favorite. My other bass is a Wan Bernadel. I had been using the Kay for jazz and the Wan for orchestra. Lately I am playing the Wan in Big bands, too- more punch. I had Belcantos on it. I'd been thinking lately about those Evahs, so I threw 'em on today. First thing I noticed, the action seemed about twice as high, just from the strings. Down three turns, OK that's more like it. Still a little stiff pizzacato. Big sound. Then I tried the bow. WOW! I did not expect them to out-arco Belcantos, but there it is, volume, timbre, and easy starts. But they still feel a little stiff. And so I ask, do the weichs bow as well? I'm a little afraid to find out, the string disease is lying in wait.