bassed-ndzmorezone5

I am looking to do a custom enclosure behind the rear seats of my B5 A4 for both subs and amp. I would like to maintain a good 75% of my usable trunk. I also will slowly be piecing the system together with new Components up front and possibly the rear. I listen to such a broad range of music I figure I will probably need an eq, but maybe not. I am open to all suggestions and if you have specs and pics of your set up please let me know.

Subs ideas:
A.(2)MB Quart PWE 254 (10" subwoofer with dual 4ohm voice coils)
<a href="http://www.crutchfield.com/S-4oOVOinUyqa/cgi-bin/ProdView.asp?g=520&I=049PWE254"><img src="http://akamaipix.crutchfield.com/products/2005/049/h049PWE254-f.jpeg"></a>

B.(2)Rockford Fosgate P210S4
Punch Stage 2 (10" 4-ohm subwoofer)
<a href="http://www.crutchfield.com/S-4oOVOinUyqa/cgi-bin/ProdView.asp?g=520&I=575P210S4"><img src="http://akamaipix.crutchfield.com/products/2004/575/h575P210S4-f.jpeg"></a>

Amp Idea:
A.<a href="http://www.crutchfield.com/S-4oOVOinUyqa/cgi-bin/ProdView.asp?g=110&I=049RAA2400"><img src="http://akamaipix.crutchfield.com/products/2005/049/h049RAA2400-f_LD.jpeg"></a>

I like the price but am not sure on quality etc..
MTX Package:
<a href="http://www.crutchfield.com/S-4oOVOinUyqa/cgi-bin/ProdView.asp?g=208050&I=700T56410"><img src="http://akamaipix.crutchfield.com/products/2005/700/h700T56410-f-2.jpeg"></a>

HIS4

You can find them really cheap but they've had a lot of problems like ticks and pops during turn on and turn off. Specs look nice but I'd probably look for something else.

FrysSux

I have a single 10" DVC sub from RE Audio (http://www.reaudio.com). I bought the SE. Its pretty good. Its powered off 2 channels of my phoenix gold ti900.7 amp. Loud enough for me =). I was going to buy the Rockford fosgate sub you had listed, or possibly the punch stage 3. But the RE was cheaper and sounds really good. I'm real happy with it.