I owned 4 Hanes Beefy T-s in black that I bought about 10 years ago, and wore for work daily.  The older ones seemed to be thicker and better quality, obviously holding up 10 years is proof.  The older ones also had different (sewn on) tags)than these new ones (these have screened on tags), so it appears these were made by a different production factory, or the specs have changed over the years.  We will see how they hold up.  I'm hoping they shrink a little as the large size is more like XL.