I kind of like slotted screws myself. I think in this day and age they tend to be shunned because people lack the patience of dealing with them. To install them right, you really need a screwdriver that fits the entire width of the slot, and then a screwdriver that is as wide as the screw head. Once you get those two combinations right, they don't slip. Period. I just don't think people take the time to find the right screwdriver.
The one bad thing about slotted head screws though, is you only have a 50/50 shot at lining up the slots. At work we build high end boats so obviously when we get done fastening anything, the slots have to line up aft to forward,that way everything looks clean. Getting all those slots to line up, while still holding tension, and without over-tightening can be problematic. At the same time you can't bugger up the polished stainless either...The Phillips headed screws give you twice as many chances, while the socket heads obviously are the easiest.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"