Any views on Amplifications for Magico Q7

Folks, need help on amplifiers selection for Magico Q7 version 1 speakers! I have only options available: (I) Soulution 501 monos or (II) a pair of Accuphase A75s - can do bi-amping etc.

Owing to logistical problems, I am not in position to do a head to head comparison. Have to pick up one option. 

Really appreciate your kind input/feedback!

Cheers