Probably not what the OP is looking for, but:
Many years ago, when -hp- still built test and measurement equipment, the salesman pointed out to me that the assembly screws were not Phillips head, but Reed and Prince. The difference between the two "+" shaped ends is subtle, but useful. Specifically, there is normally only one Reed and Prince size, covering a range of heads roughly equivalent to three Phillips drivers.
I had a hell of a time actually finding the drivers, but finally located them on the Sears Craftsman website, although not in any Sears stores. The construction and handles were identical to more popular Sears screwdrivers, and the price was normal. I haven't looked recently, since the four I bought then are still going strong.
Apparently, some Keithley and other brands also used these screws in the 1970s.
In general, I have been happy with Craftsman screwdrivers in larger sizes, but their miniature ones are not as good as Wiha.
American electricians swear by Klein screwdrivers, and they make the world's best beer-bottle opener on the same production line.