I got a bass from a TB'er a while back, and it had ProSteels on it. I didn't really care for the sound, and I characterized them as very bright and deep but lacking in midrange. I'm thinking it's the sound of the bass I didn't like, 'cause I just put a new set on my Tobias, and boy howdy, what a sound! Bright and deep, yes, but with great midrange character as well. Waaaay better than those miserable (and free) Elixirs I had on there. My testing of Elixirs is finished. Didn't take long, either.