I could use a pair of Seasonic X1000's that I have, but I also have 4x of the DPS-1200's from an old HP DL580 just sitting around.
I also have a pair of DPS-700GB PSU's from a HP DL360. These would be under-rated since the L3+ Draw is rated at 800W.
I was told by others to get a PSU rated at least 20% higher than the load.