I prefer Torx; one of the very few good inventions of Generous Motors.
Hmmm... I don't think Torx drive fasteners were GM's baby. They just use
them a lot. Check this:
http://en.wikipedia.org/wiki/Torx
For the record, I really like this drive system as well. I don't ever
recall having a Torx issue, other than the occasional need to clean
spooge and/or paint from screw heads.
Erik