I'm yet to purchase at least five packages of this ones. They are elegant, tone-wise, sweet sounding strings with a pleasant balance between warmth and bright. Very underrated strings in comparison to the famous ernie balls, but I mind it's because only a few people tried them. String your les paul with the Optimas, and you'll have a full sound, with life, warmth, brilliance and a delightful way to play as they are very kind with your fingers. It seriously deserves a try. Give it and you'll know exactly what I'm talking about.