Going from 7nm to 6nm isn't going to gain a whole lot. I believe the SD 865's are already on 7nm EUV, plus, being that small they are already 'developing' smaller scale than the transistors themselves. This means that while we can 'develop' at 6 or 7nm, the transistors themselves aren't this small. Silicon processing size has pretty much become a sales 'buzz word'. Yes, we do see some gains, but nowhere near what we used to since around 22nm.
Sorry, but Samsung has been blacklisted by friends and family. From phones to tablets to even refrigerators, Samsung as a brand has been a hideous, lumbering disaster. Avoiding this brand altogether saves us lots of time in evaluating new purchases. (HP is another brand that has been consigned to the netherworld.)