From 1969 or so, as a youngster every single 'off' I ever had was on Michelin X, ZX, or XZX so I have avoided Michelins ever since, one minute you're holding on in there next minute you're in the ditch !
Had another car about 10 years ago on Michelin Pilots at around £180 a corner, again got into trouble a few times. Swopped to Maxxis boy racer rubber at half the price on recommendation of my local tyre fitter and they were brill.
I now only use Yokos or Toyos on the Morgans although I believe the Verdresteins are good on 4/4's.