A tip I was given as an apprentice a long time ago was buy reasonable quality tools, in a big kit. If any get worn or break, replace these with top quality stuff, then you will have all you need,but the most frequently used stuff will be the best. You only need to round off an inaccessible torx screw once to realise how cheap or nasty tools cost you dear..
Totally agree
I always get the best, I can, for allen keys, torx/spline drivers. As the cheaper ones will not be an exact fit and will round off the screw bolt
I have a good selection of tools from Halfords (Pro), Snap-On and Mac Tools.
But the tools I use most are the Halford 150 piece kit (about 6 year old) Halfords rachet spanners (fixed and flexi head), Halford stubby spanners, Along with Mac Tools 18V impact gun.