My Brooks was the first to ever give me saddle sores, and that's after having used some pretty serious ass hatchets in the past. It's definitely a quality product and it's better now, but break-in is a bitch.
Me, I spend half of every year cycle-touring the world, wearing ordinary cotton underwear and Fjällräven expedition trousers on the bike. My Brooks broke in after 500 km without sores and only a modicum of discomfort, and after that it has been like I’m sitting on air as I ride.