Diablo 300 vs Luxman 590AXii with Sopra 3

Hello folks, first post, and not a knowledgeable audiophile.  I have a home under construction that will have a 40' deep by 30' wide primary living area with 19' ceilings, basically an open living/dining room bleeding into a kitchen.  I bought a pair of Focal Sopra 3s to fill the room with respectable sound, while maintaining the aesthetics/decor that kept everyone happy. I"m considering a Luxman 590AXii or a Gryphon Diablo 300 to drive the Sopra 3s (and single REL S812), and wanted to hear from anyone who might have first hand knowledge with this amp/speaker combo.  I'm looking for very good two channel sound, but again, I'm not an audiophile, not swapping components, cables etc looking to squeeze every last drop.  Just looking for a very solid, respectable, set it and forget it high-quality system.  Source will likely be the Lumin T2 DAC/streamer.  Thanks for any thoughts or advice.