3 dozen pairs of identical socks. Mine are black crew cut. I'll wear them until the last few pairs are worn through and I'll never have a sock without a mate.
For real though I get that 90% merino blend and I’m happy with it. I haven’t found anywhere cheaper. It’s about the same everywhere you look.
Everyone recommends washing them a lot less than regular socks but i just don’t have it i me so I buy a few dozen pairs. I only skip putting on a clean pair if I haven’t had a shower, and that’s rare. It’s usually the first thing I do every day.
You do you. I subscribe to the "variety is the spice of life" mindset. I need different styles for different use cases and different colors just for fun.