This sub cannot compare to any other sub. I just have one and made a custom ported box for it. Sounds so good that one cant even compare any other subs to it. No other sub can touch it. I have had this sub for about a year and it still runs great no problems at all. Hasn't lost any sound and still hits as hard as when I first got it. Don't bother with any of the other subs because if you want the loudest get a this real sub.