Took the Roto 66s off and slapped on a set of Roto 77s (flats) and...... I really dig the sound! Can't really pretend I'm Geddy Lee with them, but it's a whole different vibe that I really like. Now what? I am finding I want more basses not because I want more basses, but because I want more string options. Ideally I would have: My Jazz with TI Flats another Jazz w/ Roto flats and one more Jazz with Roto 66s And then my Rick, currently with Roto flats And another with Roto 66s And if I could....... I'd have two pre Ernie Ball Stingrays, one w/ rounds, one w/ flats. Ugh!