What underwear should a 8th grader/13 year old wear?

I wore briefs then switched to boxer-briefs and those are what i wear now. I wear Calvin Klein and Hanes ones right now. Should I use a different brand or switch to a different type of underwear? My colors that i have are blue, black, gray, light blue, dark blue, and cameo. P.S. yes I'm a guy and I'm straight.