My personal observations -

I HATE SQUEALING BRAKES!

I have never had a Campagnolo and/or Dura Ace side pull brake squeal under any conditions. It's one of the many reasons I love these brakes.

All cheap brakes I've ever had squealed at some point (Wienmann, Ballila, Mafac,...). The one time I tried MAFAC Racer brakes, they squealed so badly I got rid of them (<-- this was done at a time when I had almost no money). There was no set of adjustments which would get rid of the squeal or keep it away for very long.