400 dollar sub?

Hmmm, I'm a JL Audio guy and I'd normally recommend a 12w7 or 13w7 but they are both well over $400, and since you want something nobody else has...how about the new Orion HCCA 15.4, its a 15 inch sub that you can get on Ebay for just over $400 shipped and you can put gobs and gobs of power to it and it should just suck it right up. Thats my suggestion for you.

Do you mean b/c of the weight of them?

yeah, check out the dd's.....hell the RE (resonate engineering...hope I spelled that right)

I know the MTX 9500 are just under $400 on ebay now....very fond of those I am.

forget about the soundstream.....LOL the T4 is junk compared to a DD3515...I got one hangin in my bathroom to prove it...LOL hell if you go soundstream just go flea market all the way, & get a poweracoustik mofo LMAO.

what was wrong with the L7 again? it is usally a pretty good idea to listen to the guy that beat robert kollar (props BTW)

Depending on what you can find on eBay right now, I would recommend a Memphis MOJO 15". Its a remarkable sub with high power handling and dashing good looks. I have seen as many as 4 MOJO amps (2K watts per amp) on one MOJO 15" in competition vehicles. I personally had a single 12" with a Memphis St-1000d in an extended cab Dakota that would take your breath away. It hit a 152.4 on dash.

Not a lot of people on this site use Memphis, but I have been using their products now for about 5 years and havent looked back. Just thought I'd throw my two cents in.

The DD is the best option I've seen, also the BTL. The Boston G5 won't come close, the JL won't get all that loud. However, with the DD, don't expect much SQ from it. Many people say it's an SQ sub and to be honest, they don't know what they are talking about. I haven't heard a BTL, but 2,000w is enough to tickle it.

A soundsplinter rl-p is a good choice to throw into the mix. I have an 18 that I was running in my Accord and it got quite loud and sounded really good. I used to own a DD 9515 and it didn't get quite as loud, but it sure sounded MUCH better. If you're looking for straight out SPL and dont care about SQ, then by all means DD is a great choice. Consider the RE MT's also, or for more SQ and loud combo, there is the older RE XXX.  Cactus Sounds makes some good SPL subs and the Atomic APxx (by Atomic) is another good daily SPL sub. For amps, I highly recommend RF. I have a T30001bd, and if you check out their actual vs rated chart, you will notice how underrated they are. On top of that, they stay extremely cool. The T20001bd would work well for you as well. Check out High Desert Audio on eBay (it's Rockford Fosgate's ebay user id for their refurb stuff...i've bought several items from them).

Realize with this, you need a good electrical. Plan on spending 500-1k on electrical costs such as an upgraded battery, possibly a second in the trunk, and an HO alt, and of course and first, the big 3. Batteries, I recommend Odyssey, they are great daily batteries. If you plan to compete, then Kinetik would probably be a better route since they have more reserve. Hope this helps.