I've been using Eudoxa gut strings for over 25 years now. I switched from Pirastro Gold on the suggestion of my luthier after he had done extensive repairs on my violin. They provide a beautiful warm tone that can both sing and soar (not only on my "good" instrument, but also on lesser ones). I've tried other strings (both gut and synthetic), but nothing beats Eudoxa for me. I've been ordering from Concord Music for about twenty years now, not only for their always fresh stock of Eudoxas strings (and anything else you might need), but also for the quick delivery and great friendly service. Thanks.