I have a new 10″ ION-X, got it for Christmas. Drilled 71 holes in 11″ ice before the battery died. Did this to see if the claims were correct. The big drawback I have seen is it ices up really easy even at 10 degrees f. Sometimes I drill one hole and can’t cut the next without chipping the ice off the blades. I’ve had my old Jiffy flights at -10 so full of frozen slush it didn’t want to clean the hole and it still cut. Not sure if I want to bring my auger into the Otter to melt every day it is cold out.