I installed my new (used) focals yesterday. Wow! what a difference. It's like night and day fron using coaxs. I have always used rear fill, especially since I drive a suv, I felt that rear fill was needed. But since installing these comps and tuning them up to my likings, the rears got disconnected.
Nice crisp and clear sound. Sure makes my rock & roll and heavy metal sound so much better.
Now I understand why some say rears are useless.