Front Stage with Center Channel on a Budget!

[SomeGuyInPDX]

Currently I am in the procces of upgrading my high end while using as much of the equipment that I already have. I sat in a guys SQ car the other day and was blown away! With my eyes open or closed, I could not point and tell you where the sound was comming from, It was comming from everywhere, and It was very loud and very very clean. Every day since then I cant stand the way my car sounds.

My current setup: I ran the front left and right channels from the Stock HU/RCU to an AudioControl EQX (high level inputs), the EQX has the high pass output running to a PPI A204 art series(4x25rms @ 4ohms) which is powering the stock cabin speakers(frt doors w/tweets in the sails and rear deck). the Low pass output runs to a Orion 2350gx (2x350 @ 4ohms) running to 2 15"L7's in a sealed box.

Other Equipment I have but not installed: Orion 225 HCCA (gen 1), Orion 230sx, and a ADS M860. All these amps are mint.

What I still need to get is a new HU. I have room for a single or double din.

Some sort of siginal procceser/crossover that has a center channel, unless there are HU's that have some sort of built in procceser for center,crossover,ect

Front/rear/center speakers. This is where I need the most input. I don't give a S about brand name, I care about sound quality. I would be happy to hear about HQ speakers that have no name and come in a brown box!
My current Subs are Creadence and 99/100 people never heard of them, but they do know them through other brand names and they sound great.

I listen to 50% rap and 50% everything else(No techno,No opera). but I do listen to it very loud daily.

Thank you for any and all suggestions