The Crucial P3 Plus 1TB wins in 4 out of 7 comparable specs, with 2 ties. Its biggest advantage is Capacity (100% better).
NV2 500GB wins in 1 spec (MSRP: 53% better).
Recommendation
Choose P3 Plus 1TB if you want the best overall performance — especially capacity.
Choose NV2 500GB if msrp matters more to you.