I've been using the same Velodyne HGS-10 series II sub for 10 years in my living room system and really have had no complaints. It performs like a champ. However, ignorance is bliss, and I have a feeling I don't know what I'm missing by adding another sub to the equation for movie-watching. The room is primarily 13 x 20 feet, with 8-foot ceiling. I say primarily because one long wall actually opens up to a dining room area. The back wall opens to the entrance way of my house. The Velodyne specs indicate it goes down to 35 Hz +-3dB. Is there a second sub out there that would blend nicely with my Velo? I'm looking at a price range of $1,000 or less. Thanks for any assists.