I use philips head screws (I prefer fillister head steel screws) with a  magnetized screwdriver of correct bit for screwhead and do not worry about them falling out or marring surface(the corners of hex head screws remove paint and creates ring around bolthead) when installing or tightening this is especially useful when installing or removing screws in recessed areas without the use of a bulky screwstarter,if you use the correct size driver for screwhead they will tighten fine.A hex head can be easily overtightened and threads damaged especially in soft metal or plastics.
 The hex head screws I use for brass or other threaded holes in harder material or where I need to solder something on to.
 Alan

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