I use the 1200. All fans at lowest setting except the top one. It is at medium speed. It was an easy build, lots of room and no wires showing. I chose it to be able to use the CP-850 p.s. They are made for each other. The p.s. was reasonable in price and is totally quiet under full load. After 10 hours of Prime 95 Blend no core rose over 69c.
Only thing is if you use the Noctua NH-D14 you will have to mod the side panel fan bracket as the cooler will hit it. The cooler is big.