The Phillips screw was DESIGNED to cam out the driver when too high a torque was applied. It was designed when powered drivers were introduced to the assmbly line and workers were tearing off the heads of screws requiring repair or disposal. If you must work with Phillips head screws, buy best quality bits of the right size and provide a lot of pressure.

The advent of small torque limiters has allowed lots of new screw designs, each with their own design criteria. I like Robertson (square) drive screws but have noticed that many of them are now comming with shallow heads (I am sure that this is less expensive). They were designed to stay on the end of the driver so the assembler could use one hand for the mounting and have the driver and screw together.

The combo square and Phillips was designed to sell in both the US (where everyone has Phillips drivers) and Canada (where Robertson drivers are more common). I have found them the easiest to strip if you don't have a combo driver since you have a lot of thin, unsupported metal.

I like the Torx screw but find it harder to locate in many screw sizes. The JIS is nice, but very hard to work with if you are using Phillips drivers.

Respectfully,

Jerry