as far as being musically accurate the Wgti sub would be very difficult
to top...

 

My vote would go to either an IDMAX, Diamond Audio D9, or W7.

 

15wGti is my fav.

 

2x si mag v4.... bad to the bone !!!
you will be stunned by them.

 

Morel Ultimo with the awards and review to show for it as well.

 

If you got the funds:


http://cgi.ebay.com/AUDIO-TECHNOLOGY-SKANNING-Dynaudio-Accuton-Scanspeak_W0QQitemZ330340685361QQcmdZViewItemQQptZ Speakers_Subwoofers?hash=item4ce9d6d631&_trksid=p3 286.c0.m14&_trkparms=65%3A10%7C66%3A2%7C39%3A1%7C2 40%3A1308%7C301%3A1%7C293%3A1%7C294%3A50

 

ID MAX will be your best bet
affordable
efficient
amazing SQ
great SPL


just read up on the history on these subs, not much can touch them.
(pure SQ however, i'd agree with the morels of high end focal)

 

SI mag vote here
Mine sounds great and still pounds!!

 

Well i bought a couple of the IDMAX 10D4's V.3 this summer. Can't wait to install them. Woo hooo!!!

 

JBL Gti, that differential drive works wonders!