DR Pure-Blues Pure Nickel Electric Guitar Strings Lite 9-42star rating 5ChrisFebruary 2, 2012Fantastic strings. Great sustain. Tone on unwound strings as good as it gets in my opinion. Intonation vastly improved, had to move almost all my saddles toward the nut. Absolutely worth the extra $2. Very happy I stumbled across these strings. Round core with round nickel wrap strings are best combination in my opinion. I play an Orange Dark Terror amp, and could instantly tell these strings dripped tone.