Fortunately, I own three sets of Phillips head screwdrivers: SAE, ISO and Reed & Prince. Reed & Prince are the choice of furniture manufacturers.
I always cringe a little when I see people treating Phillips drivers interchangeably – as if a #1 SAE driver should work just fine in a #2 ISO screw.
It gets even funnier when folks chuck a bit into a power drill, and make those chattering hammer-drill sounds as they grind the bit into a scratch awl, and the screw head into a divot.