@rauliruegas I think the MFs vs. the JC1 are technically relatively comparable units. They are similarly priced and are directly competitive in many ways including power, overseas building, etc... I would never buy the JC1s over the MF M8 500s if I was in that market based on speakers I have owned previously, not because I think the JC1s are technically inferior, but because I prefer a different sound.
That being said, I am not about to say that I think the MF M8s are in the same league as Ayre MXR Twenty's, anything from D'Agostino or a variety of other companies for SS amps. They aren't going to sound dreadful and won't be an embarrassment but I am going to go out on a limb and guess that someone who has spent $38K on a pair of speakers is probably not looking for an amp that won't embarrass itself, but rather will deliver the best sound possible.
I would also argue that given the OPs stated preferences, Parasound, MF, Ayre, D'Agostino and a variety of other SS amps and preamps would be a poor match and that they are likely to prefer tube gear (VTL, ARC, etc) or warmer SS gear like (Pass, Naim, etc...). Just opinion and worth and probably worth what you paid for it.