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=966135.0kind of the same deal here but in the US so that means to me cheaper shipping , I got this thing about what they charge for shipping which can go over board and sometimes kills the deal

. I've bought a lot off that site and it is, as, you see it . and most of the break out boards are by J4bberwock or one by sidehack which i also own they all work as intend

.
what i do to beat the high cost of shipping is buy all my break out boards and cables from holybitcoin sense he has all i need i won't buy miners from him his cost to much + shipping but he has really nice prices on the boards and PCIE cables that suit me,with shipping only 2 to 5 dollars per order, then order from Canada at a higher shipping, then hit ebay to look for the PSU's that the broads run with free shipping and actually get a better deal on the PSU that match the boards with one year warranty

actually,got some brand new OEM PSU's with free shipping and one year warranty ( I know the warranty means jack in this case ) for way less then buying the full set @ one place .
http://holybitcoin.com/checkout/order-received/1392/?key=wc_order_565cf2690fa81&utm_nooverride=1