I recently put new Circle K strings on several basses, and like the sound and feel a lot. Something strange happened yesterday with a couple of my basses. The strings on both them died pretty quickly, after a couple hours of use at home. I had washed my hands like I always do and I always wipe down the strings between each song I play. I was not sweating. The only variable I can think of is I was using some of the DAVA picks with the rubber grips on them, and I'm pretty sure some of the rubber was making contact with the strings here and there. I didn't see a noticeable amount missing from the pick though. I put a new set on one of the basses and I'll go back to my normal Dunlop nylons on that to see how it goes. I'd just hate to think the CK's die that quickly, especially since I haven't seen others complain of that.