I've been playing for 40 years, and have tried many strings.  These are my hands-down favorite electric strings.  First, the pure nickel windings have a distinct warm yet bold tone unmatched by those that are nickel-plated (which is most mainstream strings). The tone makes a huge difference on any guitar, if one is after classic rock and blues sound.  The pure nickel is also gentler on your frets.  Second, for whatever reason, these Gibson Pure Nickel strings last WAY longer than any others I have used.  They resist breakage and retain their tone better than the rest.  I use them on all of my electrics on which I use this gauge, regardless of guitar brand.  NOTE TO GIBSON:  please start making these in 9.5 gauge sets!