Surely the undisputed No:1 of mens underwear is the Ck trunk, it has been and more than likely will continue as the most loved, most purchased and probably the most recognised of all the trunks available in the DUGG undie world. We have seen guys buy 10 or more of their favourite and No: 1 style worried that CK might drop them in favour of a new model and you know how particular guys are about their undies. With the manufacturing techniques that have evolved and the different material blends available make a seemingly infinite combination that any manufacturer could make, though there is only 1 that fits like my Calvin Klein and that can't be replaced or replicated though many have tried and will continue to try, call it the tall poppy syndrome or whatever you like if you are in 1st place everyone wants to be there. We also wonder why brands create a new fit when the old 1 does just fine and anything new is just going to be uncomfortable and frankly second best. I say stick with the old tried and true CK trunks don't change them just make more!
When looking for trunks we could guide you in the direction checkout the the CK trunks here