I really like the KoolStop Salmon rubber. For me it has given less rim wear, improved wet braking and fine dry braking. I found the Mountain style pads difficult to adjust and prone to squealing. I prefer the KoolStop Supra pads with Salmon rubber. They are easier to adjust and I have experienced much less squeal with them, even installed on the very same bike and wheel.
Bottom LineNo, I would not recommend this to a friend