I frequently need to work on equipment that's got either security screws or very small screws, so my
driver kit gets a lot of use. It's also indispensable when working on a laptop computer, because
everything under the hood is held together with tiny little screws.
I used to get my small hand tools at Sears. The Craftsman brand of precision drivers was okay-ish,
but quality could be lacking, and they broke frequently. iFixIt's tool kits are much more reliable,
as long as you don't mind changing bits from time to time. Back when I was working in a computer
repair shop I opted for sets of Wiha drivers, which were considerably more expensive but paid for
themselves quickly with how frequently I used them. Wiha ARE very nice, but beware the deadly
sticker shock.
Don't try to use a poor-fitting tool in a small screw. Much sadness and regret awaits you after
you have rounded a head and are considering the unpleasant options for removal.