I use D'addario strings on my acoustic guitars and a mixture of Ernie Ball and D'addario on my electrics, but up until now, any budget strings on the 4-string, so I decided to invest in D'addario and see what sound improvement I could get. Being mainly a guitarist, my existing bass gets less attention than my guitars. My bass became a whole new instrument with these strings; tension is good and with these strings on, the bass is easy to play, especially to get that 'snap' on a slap'n'pull technique. The sound is bright, but not lacking in sweetness and these strings have given my, well, mediocre bass a whole new lease of life.