Newegg has the Western Digital SN850 1TB PCI-E4x4 on sale for $164.99 - $15 instant rebate = $149.99. :happy:
According to PCPartPicker this is the lowest price this drive has been, and is one of the better PCI-E 4x4 drives out there.
Here's a nice comparison of the 5700G vs. 5800x at equal clock speeds. (y)
Even though the 5700G only has 16MB of cache vs. 32MB of the 5800x it doesn't seem to be too big of a detriment. FWIW...the 11700K also only has 16MB of cache.