This is my first post here in any audioholics forum, so please bear with me. I have come across an opportunity to purchase the XPA-DR3 and XPA-7 Gen 3 on the used market (within $300 of each other). My current set up is a 3.1 system with potential to further expand my home theater as well as multiple zones. I’m running a Denon X-6500H, (2) RP-280F, RP-450C and SB4000 sub from SVS. Looking for advice between the two (advantages/disadvantages) and which you would choose and why. Thanks!