I have owned several budget sub ranging from the polk psw505, psw202, psw10, jbl ES250, kenwood sigma servo 10, and dayton sub1200. Imo the best sub for the money is the dayton, it sounds the most accurate and is the best priced. The PSW 505 has a lot of output but is boomy. I doubt the BIC F12 is any better. That being said if you can spend more then start with atleast a HSU VTF-1, SVS PB-1000, or Rythmik LV12r.