Are pressurewound strings the same as half-rounds? I currently play a fretless 5 string and am looking for as bright a string as I can find without eating up the fretboard. I'm using Rotosound Solo Bass 55's in .045, .065, .085, .105, and .130. They sound great... very bright and live... but I'm afraid they're a little aggressive for the fretless neck. I need opinions from other fretless players.