SATA SDD vs NVME PCI x4 SDD for +$10?

[Sparktown]

So I got a Samsung 860 EVO 500gb SSD for $69.99 during a flash holiday sale. However, I did a little bit of research on NVME PCI 3.0x4 M.2 SSDs. I have a Asrock]https://www.asrock.com/MB/Intel/Z170%20Pro4S/index.us.asp#Manual]Asrock z170 Pro4s[/url] with a M.2 slot and it looks like there are a few NVME PCI3.0x4 M.2 SDDs from reputable companies around $79.99:
Crucial P1 500GB 3D NAND NVMe PCIe M.2 SSD: $74.99
HP EX900 M.2 500GB PCIe 3.0 x4 NVMe: $79.99

I'm not in a big hurry to upgrade my storage. I do gaming, web design, illustration and some graphic design stuff. I may start doing some stuff with Docker and virtual machines in the future. I've seen a mix of comments in past forum posts claiming NVME PCI3.0x4 M.2 SDDs both do and don't provide any real worth advantage. Most of the posts I've seen saying NVME M.2 isn't worth it seem to assume a larger price gap. However, SATA still seems more flexible (I could put it in another machine as an extra drive, put in an enclosure for a portable drive, etc).

What do people think? I can still return the 860 EVO to Newegg for free until the end of the month. Should I return the 860 EVO and get a NVME PCI 3.0x4 M.2 SSD with maybe +$10 - 20 more? Are the NVME PCI3.0x4 M.2 SDDs at this price point low quality? Thanks.

 

[USAFRet]

While both of those are NVMe drive, they are a bit slow in that world.

The HP, for instance:
Sequential Read/Write Speeds up to 2,100 MBps / 1,500 MBps

Compare to a Samsung 970 EVO"
Max Sequential Read Up to 3400 MBps
Max Sequential Write Up to 2300 MBps

They are "faster" than a traditional SATA III SSD. But not up to the speed of a top rank drive like the Samsung. Hence the lower price.

For an equivalent price, on a compatible motherboard, I might go with one of the ones you selected. But knowing that it is only "mediocre" in the NVMe world.