What really determines quality is how well a shirt holds up under repeated washings. I have used Hanes Beefy tees, only to have my customer call & say the shirts shrank up about 2" only after 2 washings. It's really where the cotton is grown; it comes from all over the world, and get lot of shirts dye & wash differently, based on where the cotton comes from. I used a lot of Gildan 6.1 ounce, but could swear that they mix in the 5.6 ounce into the lots, as I can just feel the difference in the shirts as I handle them. I have also seen a lot of the dark colors fade quite a bit after just a few washings. In my opinion there is no real consistency in quality of t/shirts any longer.