Looks like Ed was on the right path for the modern propo model, would have been interesting to see where the Taurus development would have ended up. One thing you can say, development of the ideas was pretty rapid, I don't see that sort of concentrated change (Astro-hog, Orion, Taurus) in such a short time happening these days. Have to say the modern Pattern or IMAC models all look pretty much the same, to me anyway. I like models with character.
Evan.