ahmed88
buy the best you can, conduct yourself in a professional manner at all times, this includes your tool kit do not listen to these - you only need a leatherman idiots.
you are doing a quality job, get to know the crew who fly these aircraft that you are working on and then ask yourself if fixing the thing with a bent nail is a good plan, or put it another way would you be happy flying in a very expensive aeroplane knowing some guy is fixing it with a gerber?????
gs