As per my post below, I'm looking for a new sub. After doing some reading, its looking like the powered SVS 20-39 cylinder could be a great choice. However, I'm concerned about putting a sub like this into a NYC apartment. My present living room space is mabye 10' by 13', unsealed. I'll probably be moving into a larger apartment within a year, but it's New York, so you know the place won't be that large. Maybe I should just stick to one of the cheaper (less powerful?) Hsu options? What has been some peoples' experience with subwoofers in New York City? Do your neighbors complain often? My listening habits are 70% music, 30% movies. Presently my front speakers are bookshelf & not all that good (but will be upgraded eventually). Receiver is likely to be a HK 230 or something similar.