Metal toolboxes invariably chip and rust in my experience. I've had a variety of plastic ones where the main box is usually robust but the trays break. I currently use an aluminium flight case type box. I cut some boards to fit and arranged the most commonly used spanners, screwdrivers, etc on the boards and stapled strips of 1"wide knicker elastic across each tool to hold it in place. Pockets in the lid for bits and pieces and a range of small plastic storage cases for odds and ends. Used to use golden virginia tins but haven't smoked for years. The problem with sets of sockets and spanners is all the sizes you never use. Chrome vanadium for spanners and sockets is a must. A cheapish half inch drive socket set will fare well enough for home a mechanic. Smaller sizes need to be better quality to stand the strain You can get good tools cheap and crap tools for a fortune. Car boots, bike jumbles and shows, flea markets can have some bargains in second hand stuff. An old tool is a good tool. Don't spend a fortune guessing what you need, buy what you're going to use and update/replace as you get more experienced I'd include a basic multimeter in any tool kit. I prefer a digital. 2 pair of lockiing pliers, 1 small, 1 large will come in handy. I can recommend visegrip. I've had a small pair4" and an 8" pair for decades and they look and work like new. I'd include a rubber hammer and/or a leather faced mallet.