G'Day Rob,
Not that I expect my opinion to bear much weight, (it doesn't at home!), but...
I share your pain with the decision... I still have not decided which path to take with my F15. (wartime Vs post-war usage).
Obviously, the Worth tractor is not all that common any more. So I would like to see the Tractor version survive, too. And it would be great to see it side-by-side with the Strikland version one day!
My two bob's worth.
Howard