Unless you are in America, or are repairing cars from the 1960's, you need Pozidrive screwdrivers, not Phillips. The screws have "X" engraved on the top across the cross. You will recognise it when you see it. The drivers have extra grooves
"Stanley" and other American brands often include Phillips, so are not what you want.
The wrong size or shape of driver, or a worn one, will damage both the driver and the screw and turn them to junk.
Only buy screwdrivers made of Chrome Vanadium steel, it is a hard alloy. Cheaper ones may be made of carbon steel or chromed steel, which are not as good (the little tips for electric screw drivers are made of an even harder metal, but it is brittle. They wear away quickly so are considered expendable).
They are best value in a set from a reputable dealer.
For example:
www.wickes.co.uk/Wickes-12-Piece-Screwdriver-Set/p/149046
cheap starter set
better
big set
good set
rich woman's set
Electrician's, or VDE screwdrivers (red and yellow) are often good quality, but no suitable for general use as the blade is sleeved in thick rigid insulating plastic.
Pear-shaped handles will blister the palm of your hand less than the Engineers' handle.
A set of Jeweller's drivers will be handy for delicate work such as phones and spectacles.
Places like Aldi sometimes have reasonable tools at good prices but look at the specification carefully.
No screwdriver may ever be used for opening a paint tin. The correct tool is the handle of a dessert spoon. Try it.