I've recently bought a snow ex mini pro 575 which has a direct auger in to the material, directly attached to the spinner. That's all run by 12v electrics, attached to my vans battery. It also has a vibrator for wet salt, to prevent clogging.
Snow ex do the next model up -1575 I think, that has a horizontal auger, then the spinner, so you adjust the spinner speed individually of the auger, so you can throw a small amount a long way or vic versa.
I didn't think I need that model, but, after using my model, I can see where the second auger would come in to its own now. K
P g k