I have been collecting headphones for years I own 12 pairs, starting with LCD-X, HD 800S, HD 650, DT 1990, Sundara, Ath-M50X etc. on each of them I tried to mix many times, and I never succeeded, there was always a lot missing for the Mix to be perfect... I decided to give Focal a chance, and MIRACLE, I succeeded. the mix was almost ideal ... yes FOCAL CLEAR MG are very good but they have their weaknesses,
1) VERY VERY IMPORTANT. since this is only 55 ohm headphone ,it will need an amplifier with Low Output Impedance !!!! otherwise it will sound incorrectly, overbassed, with little detail, rare case but it happens
2) there is a small gap in the upper-midrange between 3.5 - 6 Khz. but it doesn't bother me
other than that, they sound like very good monitors with excellent low end