Most sub $1000 snowblowers have 12" augers, usually with 12" impellers. Ariens has 14" augers and impellers on their Deluxe, Platinum, and Professional lines; Simplicity/Deere/Snapper have 14" augers on their large frame and professional models with 12" impellers, Toro has 14" augers with 12" impellers on their PowerMax series. Honda uses 14" augers on its larger models. MTD's Cub Cadet and Sears Professional lines have 16" augers and impellers. However the Husqvarna Crown has 12" augers of a different design.
What is the advantage of a larger auger?