I am totally lost at the moment: I have the LCD2f purchased April 2014 which had the then current fazor drivers. Now, for $250 I can swap them to the new and updated current fazor drivers. The only thing I missed form my current ones is the bass impact. I just wish they had a bit more. Will the new drivers improve on that , without loosing what I love about them in the other areas? It's so hard to find out. Maybe I should take mine to a dealership and compare them (if I can find one that has a demo unit that is the new driver - hard to find out). It's complicated to say the least. Cheers.