A330, > FL 370, > 190 t
94.3% N1 + 3.0 Deg Pitch = M 0.80 = Turb penetration speed = safe flight
A330-200 has only two sets of numbers to remember for unreliable speed indications, FL250 - FL 370 and, above FL 370.
As said in earlier posts, airmanship and experience is the key here. Airlines managers who put low hour pilots in control of these aircraft should be charged with negligence and jailed.