Technofreak: Two points worth making.
To me it makes sense to have the good tyres on the front. That's where the steering and braking happen and where the most likely source of any instability problem's start. I would suggest that most accidents occur through loss of control at the front (under steer, lack of traction for braking, aquaplaning) before loss of control occurs with the rear tyres.
Sure good traction at the front compared to the rear can cause loss of traction at the rear but I rather suspect this happens less frequently that loss of traction on the front tyres.
Having spent a fair chunk of my past lifetime attending and investigating vehicle crashes, I can assure that almost without exception "loss of control" crashes on bends (or even occasionally on straight roads) occur through the rear end losing traction.
The fact is the regular joe-bloggs driver, and even most of those who think they are hot-stuff behind the wheel, can't handle a sudden loss of traction at the rear. There is also inevitably insufficient space to correct this before hitting something.
I see this decision as subjective, and each to their own, but my money is ALWAYS on good tires on the back.