If you're looking for good underwear, try Polo Ralph Lauren in modal fabric. It's amazing stuff. I have a lot of modal underwear, bed sheets, pajamas, shirts, towels, etc. It's the best fabric I've ever found. It's soft, it's durable, and don't ever need fabric softener. Mine are boxers, buy they also make other styles. I got mine at Dillard's. They're around $24 a pair.
Target used to sell their own brand for $6 a pair, but they were discontinued about a year ago.