I have not heard the new 12HD yet, hope to have mine next week. I plan to leave my rev-10 up and then mock up the 12's on the bench and do an A/B before I pull the 10's down.

The larger driver and larger pod alone would have improved the mid- to high balance, but they took further. This is not just a 2" larger Rev-10. Its all brand new inside and out.

While some do find the Rev-8/10 still on the harsh side, the Rev series was a huge leap in sound quality from the original Pro series.