I got the Veritas small plough (plow?) plane for Xmas. Though I haven't yet used it for a real project I have set it up, made a fence, sharpened the blades, and played with it to make grooves in a variety of woods. I love it. Now (since I am already way, way, way down the slippery slope) I am thinking dado plane. The only ones I know about are the Stanley 39s, HNT Gordon dado planes (wood), and the Brass City HP 6V2 (22nd century design and very complex). The latter two, HNT Gordon and Brass City, are very expensive; and I am not sure of the utility of the Stanley 39s. Patrick Heath's website does not speak well of the Stanley 39s. He states that they are difficult/painfull to use on hardwoods.
Does anyone know of other sources for dado planes?