First, some backround. I play a Gibson Les Paul Studio, a Godin Solidac, a Fender Stratocaster American Standard, and an Ibanez Artcore AFS75T (someday I'll get a Gretsch), and play via a Fender Blues Deluxe amp. I have been a pure nickel string purist for a few years. These sound better. The 1st time I put a set of these strings on my Les Paul, I was floored. Even my guitar teacher, who has used every string out there, was stunned. The best way to describe it is: it is like moving up to the next gauge while not increasing the tension and feel; i.e. I am used to playing .10s, but the change in tone sounds like .11s. And they last longer to boot (they are uncoated, by the way). Yes, I have played Pyramid strings, and I like these better; unlike the Pyramids, these strings did not require a new setup.