Denon AVR-X3800H with Klipsch RP 5.1.2 outperforms on raw surround precision and power handling with 105W per channel and Audyssey XT32 per Audioholics. Sonos Arc system leads in ease of wireless installation and streaming integration but trails in channel accuracy per Sound & Vision measurements. The Denon setup is the stronger choice for dedicated theaters while Sonos suits casual living rooms.