Martin,
My reference material is not that extensive, but generally I have had little trouble with my breathable waders. I have had leaky ones, yes, and my experience says that 2-3 seasons is what it takes to break down a pair beyond repair. My own favorite brand is Scandinavian Vision - mostly because they fit me very well and are extremely comfortable. I have a couple of friends who use the same brand and are very happy. Another friend is a Simms man and has only used Simms breathables. He seems very pleased with those, and has had leaks, but only small pinhole ones, which could be easily repaired.
When my waders start failing, it's usually very severe: they will leak heavily in the crotch and around the ankles. It's my impression that this comes from a breakdown of the membrane, because usually I can't find any holes. I have also seen seams, which disintegrate, but generally that has no influence on the function of the waders.
My only complaint is that the waders don't last long enough. Buying new waders every second year is a bit tough on the wallet, when they are in the price range that breathables usually are.
Martin
