I’ve tried Smartwool, Ex-Officio, and Icebreaker since having the same question a few years back. Of those, only the Smartwool remain, and I caught a sale last year to stock my whole drawer. Ex-O and Icebreaker were both less comfortable and one got a hole near a seam pretty quickly while the other’s elastic was shot pretty quickly (can’t remember which was which but knew I wasn’t going to buy more).