Audio setup... need advice

Astrosfan

Im having trouble deciding which direction to go with my audio setup.

Im having a hard time deciding on which sub/amp combo will work best for me. i do listen to alot of rap and rock but I dont want people to hear me 3 streets over, those days are done for me.

Im getting a pioneer avic-x930bt very soon and currently have polk db6501s.
Ive been considering making a spare tire box out of mdf and either using a 8" or shallow 10" sub. If I make the box, i will make a DIY for it and take lots of pics.

Im having a hard time deciding on which sub/amp combo will work best for me. i do listen to alot of rap and rock but I dont want people to hear me 3 streets over, those days are done for me.

Heres what ive come up with so far. Please let me know if you have any suggestions and if you know of anything better.

I havent heard any of these personally, so im not sure what to expect from each of these.

Alpine Type r 8" sub, either 2 or 4 ohm
Alpine SWR-843D Component Car Subwoofers at Onlinecarstereo.com
Alpine SWR-823D Component Car Subwoofers at Onlinecarstereo.com

JL Audio 8w3
JL Audio 8W3v3-4 Component Car Subwoofers at Onlinecarstereo.com

Image Dynamics 8" ID V3, either 2 or 4 ohm
WoofersEtc.com - ID8 V3 D2 - Image Dynamics 8" ID V3 2 Ohm Subwoofer
WoofersEtc.com - ID8 V3 D4 - Image Dynamics 8" ID V3 4 Ohm Subwoofer

Kenwood Excelon shallow 10"
Kenwood Excelon KFC-XW1000F Component Car Subwoofers at Onlinecarstereo.com

If i wanted a cheaper option, i was considering amping the sub, this looks interesting

Rockford Fosgate Monoblock 924 Watt Punch Series Boosted Rail Amplifier
WoofersEtc.com - PBR300X1 - Rockford Fosgate Monoblock 924 Watt Punch Series Boosted Rail Amplifier

or if i ampd my components.......

Alpine MRP-M500
WoofersEtc.com - MRP-M500 - Alpine Mono 500W subwoofer amplifier

Arc KAR 400.4
WoofersEtc.com - KAR 400.4 - ARC Audio 4 Channel 400 Watt Amplifier

JL Audio jx360/4
WoofersEtc.com - JX360/4 - JL Audio 4-Channel 360 Watts Class AB JX Series Full Range Car Amplifier

Arc Audio XXD 4080
WoofersEtc.com - XXD 4080 - ARC Audio 4 Channel 480W Class D Amplifier

Rockford Fosgate p400
WoofersEtc.com - P400-4 - Rockford Fosgate Punch 4 Ch 400 Watt Amplifier

any suggestions would really help. I think im getting started on the box in the next few days, im looking to do this.... 10" sub in spare tire! ..... with a look a little more like this(but simpler) My Custom Build: Focal, Stereo Integrity, Arc, Zapco, Alpine, etc!