Best amp for Sonus Faber Cremona M - need help

Almost convinced that the new Cremona M will become my next speakers. But, I'm not sure about the amplifier. I have the possibility to buy an 8 year old Classé pre/power combo (CP-45 + CA200), but could also get a new Krell KAV400xi cheap. Or would the Audia Flight One integrated amp match well with the Sonus Fabers? First two amps are 200 Watts/ 8 Ohm, the Audia 100 / 8 Ohm.
Any suggestions?