So what controller is good for 32 cells and the Neu 2215/2y? No Schulze. Also looking at lehner. How would the Neu 2215 compare to the lehner 2240, 2250, or the 2280 in terms of power? What could push the most power? Does the 2280 have a 5mm shaft? Would you suggest a neu or lehner motor if in the United States? What motor is physically more durable (outer can and internals)?