I've found that the WD Blue SN550 and SN570 offer excellent bang for the buck. I have a 550 on my old rig's B450 board and a 570 on my new rig's B550 board. Samsungs are faster, but more costly, and beyond a certain point, for gaming, you don't notice the difference. PCI4 is overrated for this, because it's only noticeable in use with sustained heavy read / write instances. Which is fine if you play games that read from storage a lot, but not all of them do.