When I firsted used them, I put them on my Warwick thumb and the sound and playability was amazing. I had a spare pack lying around so I put them on my new essex... The bass plays, sounds, and feels amazing. So easy to play, great to slap on, and simply looks great too. I kept trying to try new strings, but in the end I always go back to the rotos. The bad part will be ordering rotos for the 7 string soon to be.