I've only ever used a socket set for leg bolts and some of the older backboxes - nut drivers all the way. I had the exact same set that
@Sgt GrizZ mentioned above, but the yellow and grey have become worn over the last dozen years so I upgraded just those 2 specific sizes.
You don't need a full set as I only ever seem to use 3 for everything pinball related. It's then worth paying the higher price for the good quality drivers from Pinball Heaven as being magnetic, and with a long shaft cover all eventualities.