I recently purchased a Sonos Arc and plan to gradually enhance my home theater setup. Should I add surround speakers or a subwoofer next? If speakers, should I choose the One SL or Era 100? If a subwoofer, should I opt for the Sub (Gen 4) or Sub Mini?
Regarding room size, I have a living room and dining room connected by a wide, open archway, each approximately 4m x 4m x 2m. Should I consider this a large room?