Currently for 1TB they are equally priced,

980 Pro is for $59 - https://www.amazon.com/SAMSUNG-PCIe-Internal-Gaming-MZ-V8P1T0B/dp/B08GLX7TNT

Silicon Power XS70 is for $58 - https://www.amazon.com/dp/B09T2S1Z8T/ref=twister_B0C499WDWZ