I'd personally have the better tyres on the front as I prefer to be able to steer and brake
I'd personally have the better tyres on the front as I prefer to be able to steer and brake, plus having less grip on the rear is more fun.
the justification was that Fronts tend to wear out quicker than the rears
...and when the back end switches with the front and you're heading into a field backwards ...are you still having fun ?