When I say HEN, I mean Hotel, Echo, and November classes.
After that the quality has improved enormously and today I would say the technical capability and safety of Russian reactors is second to none and getting better all the time.
Simply, not building any reactors is safest way to avoid accidents USA tech rulez
Can't argue with that, except to say there are no conventionally powered subs in the US Navy, so if they are not building any more reactors then they are also not building any more subs...