I've never liked Phillips screws. Driving them into anything hard requires that you push the impact driver hard into the screw and are easy on the trigger, or the bit cams out. I tried square drive bits and they're better than Phillips screws, but there's something even better.
I now use screws with a Torx head (about T-25). The bit doesn't cam out and it's much easier to drive screws into hard wood.
I realize many of you may have alread discovered this but I'm slow to learn.
Mike