I’ve been using cap head socket screws for many years. I’m also a big fan of Torx screws if I can get them. I’ve recently noticed that cap head Torx screws are becoming more common on places like eBay and they don’t seem much if any more expensive than ordinary socket versions. Indeed, I’ve just bought some for a project. So if you need any socket screws check out the alternatives available these days.
I have bought Torx set (grub) screws, but these are still a bit harder to find. 😉