I have Bel Cantos on my Grunert, and find these to be the best hybrid strings for decent jazz and classical works. The downside with Bel Cantos is the somewhat weak E-string. But then I start thinking about the KC Strings wooden endpin leg. There has been written some stuff about this piece. They say it opens up the bass in the lower frequencies. I wonder if the problem with Bel Canto E string is that it is too demanding, and requires a top notch setup of the bass. And I guess we all agree that these steel rods are not the best thing to put on the bass. Is there anyone who´s got some experience with Bel Cantos with KC endpin?