Anyone who willfully uses a slotted screw on a new project in the presence of even somewhat reasonable alternatives should have a lifetime ban on designing any items for anyone.
John Corporate: "20 standards... I know, I'll create a new type of screw that will be unique to my corporate overlords and prevent users from repairing their own devices!"
I hate phillips. It seems like their only purpose for existing is to strip out so that you can never remove them.
Personally, any time I have a project, I always opt for torx (star). The screwdriver bits for them are not tapered so they don't push themselves back out of the screw-head (unlike phillips), so they tend to stay in place and grip much better. It's a lot harder to screw up a torx screw or bit than a phillips one.
Square drive on personal projects, forever and always. Maybe I'm buying the wrong torx, Phillips, and flat screws, but they strip out way too often. I've never had issues with square drive screws no matter where or how I use them
Square is my favorite but never used in industrial maintenance much. The square combos are on new electrical devices for construction though. I use mostly Phillips/slotted. A few security torx. Lots of hex heads, and all the small electrical terminals are slotted.
Sadly, some of the more exotic ones have been used to dissuade third-party repair. Some repair shops have been on a mission to replace iPhone screws with more common standards to facilitate general access.
nah you can throw flathead in mental disorders too phillips is the one screw to rule them all and all those nerds can shut up about maths of why the others are technically superior that's all great on paper but phillips is actually a thing you try using your "perfect" torx screwdriver on any scree you can't cause none of them are torx phillips is good enough and actually used flathead isn't even really used that much anymore it's only slightly less rare than the others and it just plain sucks