The world best electric fillet knife should be one that can handle anything. Make a bones free meat with speed and the knife sharp for longer time than the competitor. This also having an affordable price where people can reach it and said I can afford this item.
In the commercial industry of fish and meat. A bone is something useless. They are counted when they are buy fish, but they do not need it. Usually they are going to be a garbage. For some creative people this is also an opportunity that they are can not miss. The bone can be used to make flour for farm animals food. They are still have a great protein and calcium. This is not a real trash, but the nugget and fillet manufacturer just do not need it.
Big fillet industry use few thousand blade everyday to make their products. They are operated by human or smart machine for automation process. The knife produce great heat because they are use again and again to make thousand tons boneless meat in one day.
Some operator also have a job description to make knives sharp. They are use automatic sharpener and water for faster result. They manufacturer always use the best fillet knife in the world.