I love my two B15 narrow saddles, but honestly I love all my Brooks and Ideale leather saddles. I don’t tend to notice which I’m riding unless the journey is very long, like hundreds of miles of loaded touring. Then I prefer my B17 champion special. I’ll ride for a full day on any Brooks. I’ve got a B17 Champion Narrow too which I pulled off a bike I found on Craigslist and parted out. I never ride this one though. I had it installed on my Raleigh International for a spell but somewhere along the line a previous owner over treated it and it bleeds color onto my shorts. They probably used shoe polish or who knows what on it. I realize most old leather saddles can get this way if they haven’t been ridden for years but this one is really bad. It seemed comfortable to me, if not for the discoloration on my shorts, I’d ride it. As for the B15s, they are great looking comfortable saddles. I’ve never used the tying holes to bring the flaps in, I’ve never needed to. My saddles tend to hold their shape. The saddles I ride most often are Brooks Professionals and Team Professionals. I’ve also got a couple Swallows and a Swift. I can’t find a leather saddle I won’t ride if it’s in good shape.