I never did like the HR II series. I guess I was hooked on the original nickle HR-72 that preceded the stainles HR-II. I eventually found I liked the GHS Brite-Flats much better for a modified roundwound, but that in the end modded rounds were a compromise that didn't work for me.
But I'm thinking of slapping a set of Brite Flats on one of my fretless basses for while...
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"Without space, music is just noise piling up on itself." TRK
"Don't play your instrument, play music." Feral Feline
Lakland Owners' Club #248