Williams USA shallows and Williams Taiwan deeps (20mm deep was filled with a Blue Point, which is identical). The chroming is excellent on both, and have held up to daily use and abuse in a diesel shop.
My Taiwan sockets were from a mixed batch, some had chrome on the inside, some didn't (corresponding sockets either had Taiwan etched in, or on stickers).
Overall, I wouldn't have any complaints if all my sockets were Taiwan (especially for the price). USA sockets are identical in every way to Snap-On, while the Taiwan sockets are identical to Blue Points.