Just been reading a couple of internet articles where they say you shouldn't rotate back to front any more.
Some manufacturers recommend fitting new tyres to the rear of a car. The theory being that understeer is easier to control than oversteer.
The thing is - the majority of your braking is done by your front tyres. On a front wheel drive, better tyres on the front result in better grip for acceleration too.
My preference has always been to have the best tyres on the front.
I have enjoyed the grip from my PS4 tyres. However, I do find them noisy. Though probably about the same as the Bridgestones.
The fronts will need replaced soon. I estimate they will have done 14k.