We can compare 13 features from the published specs. The Samsung HW-QS700F is ahead on 5, the Denon Home Sound Bar 550 on 1, and 7 are ties. The biggest difference for movies is height: the Samsung HW-QS700F has 2 ceiling-firing channels and the Denon Home Sound Bar 550 has none. Only the Samsung HW-QS700F comes with a subwoofer, which matters when comparing the prices.