Genghis - thanks for the insight. The reference to the generic 'Boscombe' was deliberate and was not intended to be a slight on the flight test organisation in particular. I was instructing on the the Bulldog at the time of the Abingdon accident (and for many years both before and after it) and the statement regarding the (non) availability of flight test data came first-hand from a senior member of the BOI. Whether the fault (if fault it was) lay with Handling Squadron, CFS or any other agency is pretty irrelevant; the fact was that the instructors who were spinning the aircraft on a daily basis were not privy to the details of the aircraft's spin characteristics and, in particular, the fact that it would, for no definable reason, occasionally enter an unrecoverable spin.
That said, and having displayed both, I would still prefer a Bulldog over a 200HP T67 any day. However, for the ultimate in true flight training I have to agree with BEagle - Chipmunk every time.