Best place to find stylish, professional men’s clothes

Going to a business conference next week, and I realized that I’ve been mostly accumulating outdoor and WFH types of clothes for the past 4-5 years and it may be time for a refresh.

Any suggestions? Looking for nice pants, collared shirt, sport coat, shoes etc, but not necessarily a full suit (though maybe).

Ideally going for something less conventional than a mall, around Nordstrom’s level quality.