I think these look great on you but you should try multiple styles and mens underwear comes in so many different materials now. I have modal, polyester, bamboo boxer briefs (my preference). Explore. Post more photos when you have styles that you feel sexy in.
I don't wear white briefs anymore, but Jockey remains one of my favorite brands for quality and love the way they fee. This photo reminds me of my many jerk off sessions into my white Jockey briefs.