I sincerely recommend you to buy Huxy 1.5 and 2 mm hex driver!!! Although it's very expensive (about $100 each), the quality is sensation !!! Believe it or not, you'll love them right after you use it at the first time on a screw !!
but I guess if money doesn't allow.....ExS is good enough too...
many 大師父 use them.
Yes. Specially the 1.5mm Hex Driver, it needs to be very very very good! Because most car's CVD use 3x3 or 3x2.5 Hex nuts which needs a 1.5mm driver, and that particular nut is very easy to be stripped if your driver's quality is not in top form; a bad screw driver may not be able to lock it tight and you'll find it loose during your run.... so some money can't be saved ga la...