I'm an aircraft maintenance engineer and until recently we had to supply our own tools. Snap-On, Facom, Britool, and Mac all used to turn up at the airport in their goodie vans. We had to tell the apprentices not to go on board and spend all their pay on a set of spanners or sockets but to buy a set of cheap spanners or sockets and then after a few months buy quality versions of the individual size tools that they used a lot. If you buy sets they look good in your tool box but you invariably only used a few particular sizes.