I bought a couple of these little guys and have been suitably impressed for something about the size of a sharpie they are pretty handy. You certainly cant torque them much but they're perfect for most computer screws. I like a #1 Phillips head for a PC more than a larger #2. The smaller point is a great size for remotes and other smallish screws that tend to hold battery covers on. The bits are magnetic.
http://www.amazon.com/gp/product/B0014KMDZ0?psc=1&redirect=true&ref_=oh_aui_detailpage_o06_s01