It's an impossible choice... Gadgetron made ALL the rynos and the telsa claw. Megacorp gave us OP shit like the Shield Charger and Plasma Coil. Vox Industries didn't really give us any new weapon types (other than that badass fail) but made each gun FULLY customizable making them even more of a blast to play with. Grummelnet introduced us to actually wanting to fight our enemies without damaging them. The groovitron, Mr. Zurkon, and nightmare box made it more fun just use the weapon to sit back and watch the enemies react.