Chapter 1: Quality. It's hard to find underwear that fit well and last long when one's thighs like to give each other passing kisses with every stride. All the others I've tried, including expensive competitors either tear apart or make one all clammy in the worst way. Jinshy have lasted me longer than any other underwear, including athletic polyester ones, you know, the clammy ones.Chapter 2: Comfort. I've tried premium underwear from Saxx, Bearskn, Tommy, and such, and Jinshy are more comfy…