I've gotten excellent quality from Cabelas and Lands End.
Bought a bunch of turtle necks from Lands End this winter. Caught them on sale. They even have them in extended sizes, which is what I need. Regular sizes are normally $25, I believe. Extended are $34.50. I bought them on sale for $13.
Good material. Good stitching.
I've gotten plenty of good clothes at Cabelas. Might have to wait for sales, otherwise they are a little on the expensive side.
But, you get what you pay for.
I’d add Duluth Trading, Orvis, Jos A. Banks, and L.L. Bean. There are others. Carhartt is solid for jeans and work shirts. Among my favorite brands is Filson, but it’s pricey.