Have a friend who has a a speaker like the 5.3 in that it is 90db and 8ohms nominal imp. She has an Audiomat Arpege that she picked up used for about $1400. Integrated , 30W per channel. Listens to the same music you do. I've never heard it turned up over 1/4 volume, plenty of power. Sounds very nice. If you get a chance to listen to one do so.
Sincerely, I remain
Sincerely, I remain