I really like SIT strings and have used them several times. The Powerwound Stainless are like most stainless strings, bright and stay that way for quite a while. The Rock Brights (in nickel) were bright as well and calmed down a little quicker but to me, but felt as though they had more tension and were not as supple. My favorite SIT strings are the Powerwound nickels and the Silencers which work really well on P basses IMO. Might want to check with Jauqo III X, he's an endorser and has a lot more knowledge about the company and their products, plus a pretty nice all around dude to boot!