We've just switched from Diablo's to Pilot Road 2's................and after a 1000 miles can honestly say that we by far and away prefer the Pilot's. Far more confidence inspiring, and so far have handled eveything we've thrown at them without a twitch
They have 7mm deep tread, and after 1000 miles that's down to 6mm..............working on the theory that each mm is 1000 miles of use, it already means we'll get far more miles out of the Pilot's than we have out of Diablo's.
HTH