Well, you kind of eliminated my choice with that pattern thing. The Modeltech Magic is probably the best bang for the buck anyone ever came up with. The Magic Extra may fill your bill, but I have not seen one. Keeping it at $100 kind of limits your options. I would seriously think about looking for a used plane or look on "that option site" ebay. Now if you wanted to bump your price to $150, take a serious look at the Kangke SK50. You should also take a look at the Sportsman Aviation Hot Knife (http://www.hobbypeople.net/gallery/127595.asp).