I've been eyeing the cobalt threads and finally broke down and picked up a 45-130 set for my Stingray 5 to replace the dead DR Nickel lo riders. Jeepers, what a difference! The bass sings now! Intonation is near perfect, each note rings out with perfect clarity. They are a bit rough, but I play mostly with a light touch so no issues after a few hours of practice. The acid test will be band rehearsal later this week but these babies are for real.