I've been super satisfied with my Bose Acoustimass systems. Had the 3, 5, and 7. My living room isn't acoustically isolated or purpose built, but the sound is full and incredible. The Polk in ceiling system my parents have is also pretty incredible. I've also got a Samsung Sam's Club soundbar and woofer as a gift, it also sounds really good.
You can throw money at it, but unless you're building the theater... floating walls, floor, rubber isolated ceiling, just about any amplified sound will fill your space.
You can throw money at it, but unless you're building the theater... floating walls, floor, rubber isolated ceiling, just about any amplified sound will fill your space.