I don't have a strong opinion. Just curious what others think. The recent SC demos have been pretty strong and i've observed Obsidianant for eg recently focussing on that and X4 instead of ED. Is ED getting stale i wonder? It's had a good run but maybe we're on the cusp of contenders for the crown taking it's place? Or will the unknown 'big' update we've been told to expect reassert it's dominance?? Personally i hope so. I hope it can fulfil it's planned 10 year life anyway.
I have no interest in X4 to be honest, I am not at all interested in Empire/corporation building. NMS is not my cup of tea and I have tried hard to like it, there is just something missing from it. SC may never release and even if it does there is no guarantee that it will be any good.
ED on the other hand alway keeps me interested, I am alway doing something I enjoy and in my view it gets better in some way with every update. Sure it isn't perfect but I don't think there is a game that is.
For me, I can't see anything else and if something else does come along I am sure it will be different enough that I can play both very happily.