Ok, personally i would like to start off by saying I do not know EW, cant say what the guy knows or doesnt know. I am not bashing in any way, but i do take some offense to the statement that EW knows MORE than ANYONE on this site. I think my 18+ years in the industry speaks for itself. I feel I am pretty damn smart, and will run with the best. I do own my own shop, and we concentrate strictly on mid to high end car audio. Many a custom show vehicle, as well as worked for and with Car Audio manufacturers. Ok thats out of the way!! Instead of bashing people and or lines. There are many good lines out there, as well as bad lines. Many shops will have their specialty lines, and will agree to disagree on certain items. I for one do not care for JL audio. We were presented with the chance to carry JL, we declined to carry the product after testing. For our own personnal reasons, we just do not feel the dollar value is there in the subs, and the watt per dollar is not there on the amps. That is 18+ years saying I dont care for the line. Many others would disagree. And I am ok with that. Someone mentioned BRAVOX. Yes they are simply BADASS. Show me a speaker that can take 3000 watts RMS!!! Bravox EDX can, The most we got on one was 2500 RMS. Thats the biggest we had @ the time. But then look at the price tag of $700....I would hope it would do something. Now on to some subs, you want SPL or SQ??? I dont care what anyone says, JL or anyone does not get BOTH into 1 sub!!!! True you can get some of each, but no man. will state you will get max. SPL and Max SQ, or you would be winning every major competition out there in all classes. In SPL you want ones like Bravox, JBL, Cerwin Vega Stroker Pros, Earthquake, Boston Ref. Treos, Cutting Edge. Those will be some of your premium brands. There are other out there cheaper that do a great job of SPL. Some of the Swiss, Planet Audio, Audiobahn, and others. When you get to SQ, the lines really trim down. To me the best out there is Zapco, followed up by Boston, and Diamond Audio. Past that I couldnt reccommend one I believed in. On the DD subs you mentioned. I dont really know the line, so in all honesty I cannot give my opinion for you. If they are not on the circuit, then they either dont perform well enough to compete, or are just too new to the scene. Again not a bash on the line, as I do not know it personnaly. As far as price. Again cant say, but if your in the $300 range, i wouldnt feel comfortable because you just about there for a Boston G5. At $200 a sub, maybe a little fairer if a well made up sub. Most can be told from the Theil small paramaters that usually accompany a woofer. From those you can determine box sizes and effieciency of the woofer. The end result is the customer, If that is what you want, then you pay what you feel comfortable with. Good luck on your purchase.