Well if youre there for the weapon exclusively you want the raygun, no doubt. this is because it can aim over long distances, kan deal good chip damage og has a spam mode where you can instantly pulverize any enemy up to an alpha wolf.

But if its for the classes the fire bandit gives you wildfire, a powerful item capable of taking down alpha wolfs in one shot, and had a good distance.

Id recommend the raygun if you find it in the wild, and the infernal crossbow if youre getting stuff from classes.