I’ve gone back and forth between the Adamo ISM PN 1.1 and the Cobb JOF 55. Both are similar in design. I like them both because they are a narrower design and provide more high clearance, but also narrower in front to prevent any sort of rubbing in the sensitive areas. The Cobb JOF 55 is slightly firmer. This may be a comfort issue for some, but I find that softer saddles are harder on my butt than firmer saddles because the firmer saddles allow mainly my sit bones to do most of the support, whereas the softer saddles sort of mold to your butt, disperse the pressure and consequently put more pressure on muscles that don’t have sit bones underneath them…sorry, it’s hard to explain and it seems counter-intuitive that a soft saddle would be more painful, but that’s generally how it works with me. the front of the Cobb is just a tab bit narrower (4.5cm) than the PN 1.1. (5cm), which is even better for me. The Cobb is bit wider in back, which is irrelevant for me because I don’t touch that section. Interestingly, as a track cyclist, I’ve seen a few PN 1.1s on the track on mass start bikes, not just TTs for pursuit and TT.
My main issue with all the ISM PN saddles is that the split fronts are not stable…oftentimes one of the split sections (prongs of the fork) will be higher or lower than the other. I think this is a design flaw with the ISM saddles. The Cobb doesn’t have this problem because the two split front prongs are attached by a piece of plastic or material that keeps them level with each other. In addition, given that the the PN 1.1 is not as narrow as I’d prefer in the front, I use a sturdy zip tie to cinch it even tighter and more narrow. As I write this, I am switching the saddles out and returning to the Cobb
Another saddle you might consider, which I just put on my track bike is the Shimano Pro Stealth.
It’s an interesting little saddle, almost a cross between a TT and road saddle.