Thanks....those AVMs are fine amps; you cannot go wrong stepping up the 8.2 though. It would be helpful to know what you are looking to achieve in terms of sound changes before you decide upon an amplification direction to take. The Raven's, Esoteric, McIntosh, Ayon and other amps are all fine direction but some guidance from you as to what you are wanting to achieve is needed.
If you are using the XILICA processor (I was for quite some time), trust me when I tell you paying the upgrade to Wavelet and using its RoomEQ will be a very smart 1st-choice.
Can you tell us more about your system,...cables, types of music, what you are looking to improve, etc....? I will be out and about over the weekend; will respond as soon as possible.