My friend had the 40V with 10″ steel auger. It was a beast weight-wise, but I am a smaller guy. I purchased the 24V for a friend and he loves it for his wheelhouse.
It fits in the tight spaces, charges quickly, and never ran the battery out.

On the other hand, I will be sticking with my Milwaukee Fuel and Lite Flite for personal use hole hopping and fishing out of my wheelhouse. It cuts faster and just works for me better.