Moritz: The one and only saddle sore I had was caused by the seam of my shorts.....not the saddle. The chamois was broken down (I don't know how else to describe it) and the seams were causing irritation. I did what you did, used 2% hydrocortisone creme and bought new, higher end shorts I found on sale and I haven't had any issues since. Good luck.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"