PCIe vs : How To Pick An NVMe SSD

I have a 2021 asus tuf gaming laptop with pcie slot should i go with the 970 evo plus or the aorus gen 4 ssd Weirdly enough, these are priced the

Connect 4x SSDs into the PC-P3X4 and start using it The adapter fits M-Key 2280 SSDs and

pcie 4 gpu in pcie 3 slot PCIe SSDs are twice as fast as PCIe SSDs But next-generation PCIe SSDs will double PCIe Gen 4 speeds

pcie slot meaning Also since I have a MOBO that supports one PCIe x4 and one PCIe x4 slot, my question would be where to store what files as well on which