Anthem AVM-70 8K

I am assembling a new system using my trusted KRELL multi-channel amps. I’m leaning towards Anthem AVM 70, or Marantz 7706. I’ve read anthem has blown speakers when using their calibration software; but it’s room calibration software is much better! Yikes! . Does anyone have any recommendations or experience regarding the Anthem AVM 70 or Marantz? Thanks so much!