The Crucial T500 2TB wins in 3 out of 7 comparable specs, with 3 ties. Its biggest advantage is DRAM Cache (100% better).
WD Black SN770 2TB wins in 1 spec (MSRP: 37% better).
Recommendation
Choose T500 2TB if you want the best overall performance — especially dram cache.
Choose WD Black SN770 2TB if msrp matters more to you.