I'm convinced the B17 is the work of the devil himself! I've tried many saddles but keep coming back to the Specialized Expedition or Expedition Gel. There's a Plus version for those sporting a slightly wider beam! Very comfortable for me and just about good for 40 miles before I need to 'rest'!
About £25 on-line...
Specialized Expedition Saddle | Evans Cycles
About £25 on-line...
Specialized Expedition Saddle | Evans Cycles