What is your budget ?
You want to mine which coin ?
How many rigs do u want ?
We need to consider all these questions my friend .
I am using
AntMiner APW3-12-1600
PSU Series
1600W Power
Budget: 7500 USD
Coin: Impeachcoin
Rigs: As much 7500 will cover
Try to go for as many antminer L3s as possible, then see if you can't get an IBM 2880W psu with a breakout board. Psu will save you money but it'll run pretty damn loud; depending on price you may need a second one to cover electricity. I'd say the IBM psus are comparable to a hair dryer at times.
Finksy also sells 4KW IBM power supplies if you really want em, but you won't need so much power for your rigs.