I commuted with a well broken in B72 on my Raleigh Sports back in the 80s. Most comfortable Brooks I ever rode but I'm a little guy of about 145. Foolishly let it go with the bike when I sold it. I found the B67 to be bouncy & sometimes it squeeked on bumps but it would be the best choice for a heavier rider. Now I ride road & touring bikes with a B17 or B15 & likely the B72 or B67 wouldn't work as well. Don