I have a bass that just sounds better with flat wound strings. This is based on the strings that were on the bass when I bought it (An NS Design Wav Bass). Out of routine I swapped the strings to RW's and the round wound were way too bright for this particular instrument. I typically use DR Hi-Beams RW on my basses. I am looking for strings that are flexible and fun to play. I have only played one set of unknown flats that were super stiff, and years ago I had black tape wounds on a bass that were meh. I have never played a coated string. I would appreciate any recommendations, and let me know if I can provide any more info.