Define "best," using Scripture. I want specific fabrics, cuts and styles. I want to know that you're making your distinctions based on God's standards, not worldly man-made ones.
So far, you've basically got "wear sackcloth to a funeral." Do you wear sackcloth to funerals?
But I don't wear JEANS to a funeral either. I wear black, which is what THIS culture expects of one who goes to a house of mourning.
It used to be common knowledge that people behaved differently, depending upon what they wore. There were school clothes, play clothes, and dress-up/party/church clothes for children and comparable ones for adults. And this was a time,when people did NOT own ,many clothes (even those in the upper middle class and above !); unlike today.