I’ve only used these, so I cannot compare, but they blew me away with how novel they seemed to be. The sock part that held my foot felt just like a normal medium thickness sock, but the tube section is like some other wordly material, but it’s “aero” and stays up unlike some socks I’ve seen.
These aren’t pure white, but he has white and some other colors. Shop run by a former pro who is a friend of mine and he does an excellent job sourcing very expensive and technical fabrics at a very reasonable price. The classic brand stuff is top notch.