Used to wear Jockey low-rise briefs exclusively, but Jockey changed the cut or material, and they don't fit like they used to. So I switched to CKBBs. Much better fit and comfort than the Jockeys.
Not sure why, but the black material seems to stretch and distort less than the white or heather material. So all I have is black, and I'm very pleased with the fit and how well they hold up in the wash.
For my money, these are the best on the market. They're not cheap, but worth the few extra $$$.