Property me the Tool buy, because I always do when I times an electrical appliance aufschrauen / repair wanted, never had the right tools. Meanwhile opened three hard drives, a laptop display repaired and disassembled a cell phone. This worked very well with the tool set. The Materal has not moved with me. Thus, it is ideal for occasional repairs.
An opinion on daily toughest set of sets I can not do. But I think this one buys then a more expensive set. Price / performance for occasional repairs top.
08/14/2014 Addendum: The set is also magnetic, which is of course very useful for small screws. Rating thus still top.