I’d never been comfortable wearing boxers until I really started PE. I used to poke out of the fly or just get too much friction from movement. Now, briefs seem constricting and counter-productive to my goals. When I wear briefs now, I immediately feel the turtling effect they encourage. The natural hang that boxers allow seems much better for maintaining my post PE size (gravity). PE seems to have fixed the previous issued I had: the new flaccid length prevents me from poking out of the fly, and the fullness prevents the friction issues.