The BIC is well known and often recommended for the price, however it isn't known for the best sound. I've tested the CSX-12 MkII and found it to be pretty clean up to its limit. HSU's subs are highly regarded for their sound quality. I don't have actual experience with the JBL, but for the price, I don't think it would be a bad choice and I'll guess it is closer in performance to the F12 than not.