Ariens Professional Hydro EFI 28 here. Replaced a 24 inch Ariens 2 years ago that was about 20 years old and had a failing slip disc, and wouldn't reliably go forward anymore (like tamarack). Upgraded to the hydrostatic drive to avoid the failing slip disk issue in the older machine. 24 inch snow depth capacity, and drift cutters. I live on a cul-de-sac and have a double wide driveway 200 feet long so lots of snow needs moving. Hoping this is the last snow blower I'll need to buy.