What are some good plain socks and briefs sold in packs of 10+

Hi guys, I've been meaning to get rid of all my socks and briefs and standardize everything. Aka buy 10 pairs of white socks, 10 grey 10 black and same for briefs. Any brand you guys recommend? I like thicker tennis type socks and briefs that extend below the croch area, i think they call them boxer briefs.