Sherwood regs are made in the USA as they have been since they decided to make their own regs. Before that they produced parts and manufactured regs for all US regs back when SCUBA began. They also were the ones that originally modified the piston regulator to work underwater. They also have an intriguing way to environmentally seal a first stage.
I like them, others make other good choices.
I've been diving my Sherwood Magnum since, um, 22+ years? Long time. Love them though they haven't seen any cold water in a very long time, though that is why I'd originally purchased them.