We actually purchased our Yard Man 21 inch Snowblower second hand at a local company known more for their Karcher power washers as my wife worked for this company and had the "guys in the back" watching for a good 2 stage snowblower. We've had this snowblower for well over five years now and it does a great job. In a town that usually gets over a hundred inches per season, this can prove to be a necessary item in your outdoor machines. We usually do not let the snow accumulate to more than 5 or 6 inches before using our snowblower, though, I'm sure we could go higher. The problem is the end of our driveway gets so buried by the city plows that we have to attack it at around 5 or 6 inches. I think this would be true of any snowblower we would own because we end up with about 12 inches of salt laden heavy wet snow at the base of our driveway every 12 or so hours. I've not seen a snowblower that does well in those conditions without the chute clogging to the point that you have to stop the snowblower, get a trowel, and remove the slushy wet nastiness out of the chute. We've also added a 3rd party cab on our snowblower for those particularly cold and windy storms so we can get the job done without freezing our rears off! For out city driveway and sidewalks, you can't beat our Yard Man snowblower!