agree that if it only becomes uncomfortable at 5+hrs its not exactly a poor choice of saddle for you. Saddles are totally subjective, and it looks like youv’e found one that is pretty good for you. Are there any similar shaped Gobis or other saddles? How old are your padded shorts, and how often do you do 5+hrs?
I like the WTB silverado and have done all day (8hr) rides where the only part of me not hurting was my arse. Not much padding, but the wings are in the exact right place for my sit bones and the cushioning comes from shell flex and I have bought a few on classifieds here. Charge spoon also gets recommended a lot.