I have been using Hanes briefs for many years.  Maybe 20 or more.  But I just got two packs, and they don't fit right.  Read some of the reviews here and bingo: they lengthened them, so I don't feel as (ahem) secure as with my older pairs.

The good thing?  A few recommnendations for JC Penny are here, so I'll check those out.

[Added:]  I tried a pack of Fruit of the Loom Men's Basic Brief, and I love them.  Gave those 5 stars.  These Hanes are no good anymore.