All the old Compaq machines used Torx screws. I know,
because one of
the first 'upgrades' I used to do on Compaq boxes I intended to use for
anything was to upgrade (downgrade?) all the screws to phillips.
I'vr never had a Torx screw that I can't undo with the right tool, but
I've had far too many Phillips/Pozidriv that I can't shift other than
drilling them out (the most recent one held the Logic 1 PCB in an HP87,
and I didn't want to damage either the case or the PCB...).
Therefroe I fail to see how replacing Torx with Phillips could ever be an
upgrade...
-tony