I’m a diehard TM hat fan. However, their shirts just seem flat out boring to me. To each their own though.
Their hats, tshirts, and shorts are awesome. A lot of their polo shirts are great; I also like the basic ones, a lot of the designs are kind of weird looking to me. I have had good experience with the quality, I especially like the lighter weight Pima cotton ones. Keep your eye on their mailing list, they do a couple of decent warehouse online sales each year and it's a good chance to stock up at around $40 a shirt for current or fairly current stuff.