Are those your only options? There are probably some more budget-friendly ones that will do the job.
Unfortunately all the 850w gold corsair and evga are around $190-$200 ($160 usd) here.
What are some other reliable psu manufacturers? Maybe I can find something cheaper.
Rosewill 850 watt quark
Roswewill 1000 watt quark
Both are good. And can be found on sale