I'm a first time poster, so be gentle. I'm in the early stage of learning about buying a powered subwoofer. I'm looking for a "gem". My definition of "gem" is best bang for the buck (no pun intended). My initial thinking is that something solid can be had for under $1,000. The sub's purpose is to add low-end support for a home stereo (for jazz, blues, rock, etc.) and perhaps will eventually will become part of a surround theatre system. Thank you in advance for any guidance you may provide.