An update for those interested!
I have decided on the Alpine CDA-7897 Head Unit.
For subs, I am torn between 3 of them.
1. Alpine SWE-1241...I've never head or had any Alpine subs, but going on the quality of their decks, it has got to be a safe bet.
2. Kenwood KFC-W3005...Again, I've never heard or owned any Kenwood subs...I have however owned some of their smaller speakers (ie...6", 6" x 9"), and those always sounded awesome!
3. Polk Audio GNX12...I heard these at a local car audio place, and they are great! They don't hit as hard as some of the other subs I've heard, but they are among the cleanest sounding subs I have heard.
As for amps???????????
I'm currently looking at a Kicker KX800.2. But have owned XTant, and PPI. The XTant is by far my favorite amp i've ever owned...clean and very powerful. If I decide to go with a mono amp though, strictly for the subs, I would lean more toward the PPI amp, since that is their specialty.
So, I've decided on only a head unit, still torn on speakers and subs.