Ok I have already said this. AZZA power supplies are made by Super Flower and they make some very good units. But AZZA is not a brand I am familiar with. There are basically no reviews for any of their power supplies.http://www.realhardtechx.com/index_archivos/Page13100.htm
Since you are spending $1000 on graphics cards do you really want to chance that much money to an unknown?
Brands I trust across the board. Corsair, Seasonic, PC Power and Cooling, XFX, Silverstone, Enermax, OCZ and Antec. You can probably add Kingwin to that list.
You only need a quality 850w power supply as has already been stated. In my first post above there is a newegg comparison of 5 very good models. If it was me needing to power $1000 worth of graphics cards I would be looking at even higher end power supplies than those personally but any on that newegg list will work just fine. Finding the cheapest power supply in your needed power range is never a good idea.
If it was me this would be my hands down choice.http://www.newegg.com/Product/Product.aspx?Item=N82E16817151102