thats a lot of power supplies. Corsair is most definitely the cheapest 850w fully modular gold psu here. On the second place (in price) comes 850 Watt XFX Pro Series Black Edition Modular 80+ Gold which is in the list you gave me. Think its good?
About the ram, im going with the Crucial Ballistix Sport 16GB ddr 1600, the´re low profile, fit with the be quiet dark rock 3 and cheap in germany.