I have the 128G 395+. I really don't think it's worth to get this 192G one. having more mem is always good, however, the mem bandwidth is the real bottleneck
It looks like the memory bandwidth has grown a little bit, from 256GB/s to 273GB/s. Not sure if that's worth upgrading to to but I'd definitely want it if buying new.
If it weren't for the memory cartel, it'd definitely be worth it.