alpine for quality
Kickers for performance
Pioneer for bang for buck
JLW same boat as pioneer
sony cause u didnt look at the other subs on the market

Those are my what i think, though other may think other wise

Ur best bet is to go into jbhifi or some car audio an listen to what they are like, and decide, or ask ur mates with subs lol...

Im running a alpine type-R sub, cant go wrong with them but thats way out the price range, but u do get what u pay for, only flaw is that the box was almost impossible to fit in the boot of the civic coupe! but other wise, id go alpine over pioneer anyday! the quality of the bass and low range frequency compared to other subs is much better