The Western Digital WD Black SN770 2TB wins in 4 out of 7 comparable specs, with 2 ties. Its biggest advantage is Capacity (100% better).
WD Blue SN580 1TB wins in 1 spec (MSRP: 45% better).
Recommendation
Choose WD Black SN770 2TB if you want the best overall performance — especially capacity.
Choose WD Blue SN580 1TB if msrp matters more to you.
