Yeah, Torx and Torx+ screws allow much greater torque to be applied, and a higher level of control over that torque than Phillips heads. Torx drivers and bits are dirt cheap and come with almost any kit these days. Heck, I have even switched to wood / construction screws that use T20 Torx heads for framing and lumber projects around the house because they are so much easier to drive than Phillips heads. You don't have to push harder to get higher torque with them, which is pretty helpful when you are on a ladder. They also don't wear out the bits as fast as Phillips heads. Anyway, in an electronics factory environment I bet that Torx heads lead to better repeatability, less frequent replacement of bits and less chance of metal shavings since you are less likely to strip a screw head. Looks like Sony is managing fine with the Phillips screws though.