These strings are utterly, totally, unbelievably BRILLIANT. They are expensive, for a very good reason. The resonance, colour and sheer beauty of the sound they generate puts other classic guitar strings in the shade. And the tone is subtly different from conventional nylon strings. As well as more powerful. And when I plug my electro-acoustic Yamaha into the Fender amplifier it sounds nothing like anything I've ever heard. Mysterious is the only word that springs to mind. Sorry to go on, but I really cannot praise these strings too highly....