I've probably got about 500 miles on my new Brooks. On a ride yesterday, I realized it had arrived at that perfect smooth comfort that has made me treasure leather saddles over the decades. On arriving home, I looked at the saddle. Fact is, it doesn't look very different than it did right out of the box. When I hit it with my knuckles, it sounds and feels like wood. Again, just like new. I have come to the opinion that Brook's saddles are actually quite mysterious. Look at all the different beliefs people have about them on this forum. In the end, maybe it's the springs that get broken in. Or a combination of springs and leather. Hell, I sure don't know. But neither have I seen where anyone else really knows either.