SN570 eyes closed because even in worst circumstances its write speeds won't go down below 500MB/s while P3 speeds can drop to hdd level 100MB/s write speeds under worst circumstances. Also, P3 & P3 Plus are basically same with only difference being P3 Plus is Gen4(aka pcie v4.0) while P3 is gen3.
@awestorr 970 evo plus has no firmware issue which affected samsung 980 pro/990 pro/870 evo but 970 evo plus runs hot(even hotter than usual for typical NVMe ssd) so not prefereable for laptops/pc cases with restricted/avg air flow else it is quite good for a typical user even if old model.