The strongest screws are steel ones made with a good steel. Screws with hex socket heads tend to strip much less than regular phillips ones. That said, I use a lot of Dubro's socket screws. Since Dubro doesn't make button head screws, I use Axial ones when I need button heads. As far as phillips screws go, I do use Tamiya's when I have them because their screws are very good. They rarely strip out on me.