I have never seen these strings. Can you give me the full brand name, maybe what the package looks like? Also, do they sell them at Guitar Center, and what is an average cost. I go through strings like a madman right now and am still searching for the best strings for my aggressive style (hard slap & pop, multi-finger strumming, hard pulling). A set normally last a couple months until I break a string. I've tried DR lowriders, Rotosound Swingbass, Elixers, boomers. The Rotosounds seem to last longest so far. Thanks for the help!!!!