What I was trying to say is that bikes have had squealing brakes for decades across all types of brake designs. Thousands of very smart (and frustrated) people have spent many hours trying to eliminate squeals. That we are still having squeals and find the need to ask about it might suggest that it's a not fully understood issue. What works for one bike doesn't transfer over to another bike, even with the exact same specs. Yes, there are techniques (toe in of rim pads is very commonly done, at the loss of braking effectiveness, replacing the pads is another) but these are not a guaranty or even a stable and forever fix.

Spend some time in the trenches (a LBS) and you'll see what I speak of. Andy