Well then assuming you've done your homework then, there is no reason not to get the faster NVME drive, though I personally would spend a little more and get the sx8200 series instead.
If NVME is supported, it might be hard to find a better deal than wtih Intel's 660P, with a 1 TB NVME /M.2 drive available for as little as $109 last time I checked, which rivals the low prices of standard 2.5" SATA drives....