I have had Bridgestone 697's on for 87,000 km now.
Their grip is quite good. They were barely marked after a Simpson trip, where they performed brilliantly.
But the noise is the issue. Not too bad up to 50,00 km, but since then it gets worse and worse. I have been tempted to change them quite few times despite having plenty of tread depth left. But then I look at the cost an leave them.
I am torn myself as to what to do when I replace them.

