Amen.
Also, just get quality PSU's, that can run 1 miner per PSU. This also makes the miner more stable IMHO.
I can recommend the following:
Corsair 1500AXi
EVGA 1600 G2
Bitmain's PSU.
I will add for the s-7
Evga 1600 p2 ---------
Evga 1600 t2 --------- both of these cost good money.
On the new avalon 6
Do not use bitmains psu it has 18 gauge wires and the avalon 6 wants to use around 240 watts on each pcie.
the evga 1300 g2 is good for the avalon 6.
along with the other evga's
the 2000 watt server and the 2800 watt server's sold here need 240 volts
Finksy has some good psu's
linksy is here:
https://bitcointalk.org/index.php?topic=966135.0