Based on my experiences all three players: Rotel, NAD, and Marantz are not known for their bass extension, slam, & punch. If you seek these qualities, I suggest looking into Cary, Krell, and Esoteric to start off. These players are known for their bass extension, slam, & punch. At least that's what I heard when I auditioned them and from reading reviews.
Good luck.
Good luck.