Need your recommendation on a 5 or 7 channel amp

I'm new to this site and need some recommendations on 5 or 7 channel amps. My current home theater system consist of the following:

• Sonus Faber - Sonetto III front speakers
• Sonus Faber - C1 center
• Sonus Faber - in wall rear 562
• Marantz AV 7706 processor
• Golden ear XXL sub
• Sony 325ES projector
• SI screen

Amps that I'm looking at are as follows and would like some input which to get or other recommendations:

• Parasound A52+
• Parasound A51
• Audio Control Savoy G4
• MarantzMM 8077

Thanks for your help!!