Good day, Sonos community. This is the first time I'm posting here since I recently acquired a Sonos Era 300. I loved its sound and I want to acquire another system, but I have doubts. My bedroom is very small, approximately 2.5 meters wide and 3-4 meters long, literally a square, and I don't know which system would add a plus to my Era 300. Perhaps another identical system or a Sub Mini, what do you recommend? I hope you have a good day.