Kool Stop Dual Compound?
My single-point-of-data personal anecdote...
My 1995 Trek 730 Multitrack has its original Shimano Acera-X cantis and Matrix Journey wheels. When I was waking it up a couple of years ago after a long slumber, I installed Kool Stop "Eagle 2" salmon pads.
Stopping was fine, but they squealed something fierce. I fiddled with adjustments on occasion without success, and put up with it for several thousand miles. I mostly ride alone on fairly rural highways, and don't really need to brake very often, so net annoyance was low; it just wasn't a high priority.
I eventually tried some Kool Stop "Eagle 2" pads in the "dual compound" Black/Salmon, and that improved things dramatically on the noise front. I still get a little bit of squeal right when I'm coming to a stop. Stopping seems to be satisfactory, too, and maybe a bit easier to control.