SVS and Rythmik are my two favorite subwoofer brands.
The typical recommendation is to get a sealed one if your primary usage is for music and a ported one if your primary usage is home theater(http://www.autoadmit.com/thread.php?thread_id=5625263&forum_id=2#48284477)
Of course what you want is
https://www.jlaudio.com/pages/gotham%C2%AE-v2(http://www.autoadmit.com/thread.php?thread_id=5625263&forum_id=2#48284483)
Music mostly (http://www.autoadmit.com/thread.php?thread_id=5625263&forum_id=2#48284494)