OK, got my amp situation figured out... again...
I just bought a new HU and amp!!! I got an Alpine CDA-9886 and an Alpine MRP-F300 amp. Works like a charm, and sounds GREAT! And I don't get any whine at all, well except maybe from my wallet... but seriously, it sounds preety darn good. I got the amp powering 4 Pioneer 6x8 speakers (model number excapes me at the moment...).
Thanks for all of the replies, you all helped a lot.
Oh, I do have one more question:
I have the amp sitting under my passenger seat, mostly because that is the only spot to put it ( I am an IT consultant and have my vehicle stocked all the time). I am hearing that I should at least mount it on a board or something, right now it just sits on the floor beneath the seat. I have a 2005 Escape, and the amp sits very low under the seat so it gets a lot of ventilation.
What do you guys think? How should I mount it?