I don’t think there’s a valid reason why anyone would want a 10″ auger. The large holes they make are dangerous, especially to pets and kids. Most if not all who post on this board will never catch a fish through the ice that can’t fit through an 8″ hole. Using simple math, the circumference of an 8″ hole is a bit over 25 inches. When was the last time you caught a walleye through the ice with a 25 inch GIRTH? There have been 50 pound (not 50 inch, 50 pound) muskies safely caught and released through 8″ holes. I personally have caught and released two 40″ muskies (accidental catches while walleye fishing) through a 6″ hole. Neither was any problem whatsoever. In fact, the girth of the recently caught (Jan 4, ’05) world record (ice fishing division) 18.06 pound 36.5 inch walleye in Nipawin, Saskatchewan was measured at 22.5″ and would have easily fit through an 8″ hole. Circumference of even a 6″ hole is almost 19″, again larger than the girth of just about any fish you’ll ever hope to catch through the ice.

Go with an 8″ auger, no question about it.