I'm building a new system and wanted to see if anyone could give me a few good models to check out based on my setup. The system is in a smaller living room, about 18X14 rectangular. The couch is more towards the center of the room. I have a 7.1 channel configuration with JBL 6.5" in-walls (HTI6) in the front, JBL 6.5" in-ceiling for the surrounds and rears (HTI6C), and a Niles HD-CTR in-wall center. All that's left to purchase is the sub. I was looking at the Speakercraft BassX in-ceiling 1000W sub becuase I thought it would be cool to have it hidden away, but havn't been able to find any reviews on it, and don't know if it would work well with my setup to begin with. I would like something that can really be felt and picks up a lot of the lows. I'm thinking that with the 6.5" all the way around they should be able to handle most of the mids and some mid-low. If anybody has a nice used unit that might work for me I will consider all offers. Any advice will be much appreciated!