I'm happy using those cheap little plastic ones at home, but I think I'd probably want something different if I had a pizzeria. I think I've seen some hard plastic dough scrapers with handles, which sorta resemble ice scrapers. If that's a real memory, I think I'd probably like those better than either metal or cheap plastic dough scrapers for removing dough balls from dough boxes. However, I think metal would probably be best for dividing dough.
Good thing is that they're all pretty cheap. If you buy one kind and don't like it, it's not gonna set you back much.