I really like Smartwool for everyday socks, before it gets cold. Their ankle height crew socks are my typical go-to for casual wear.
I wear FITS or Omni-Wool for work as I have to meet uniform requirements.
When it get colder, I start wearing the Costco for everyday uses.
My hunting socks are all Smartwool in various weights to match the temps.
All mentioned above are around 70%+ Merino. I don't even own any cotton or other material socks at all.