Which sub is better for audio


I am looking to buy a sub to be used primarily for audio. My options are Sunfire true sub, HSU, and Bag End. I intend to spend no more than $1500. Your advice will be appreciated.
planckscale3555
www.gen-tech.com Model 928 $1500 and outstanding for music. Deep, detailed, fast with no overhang and massive 1000 wat internal amp.
www.gen-tech.com (genesis) Model 928 $1500 and outstanding for music. Deep, detailed, fast with no overhang and massive 1000 wat internal amp.
Genesis 928. I saw one on audiogon new for $1250.00. At that price you can not due better. Two tweleve inch metal drivers and 1000watt digital amp.
Guys, thanx for the help. It is interesting to see than the Sunfire hasn't made the list so far. I well come more advice. Thank you again.
I own the REL Strata III. I am a former "sub-hater". The REL changed my mind . It really blends with your mains perfectly and avoids any of the "boom boom" you usually get. My priorities are Stereo first, and 5.1 second, so is REL's. Looks good as well!