If you can afford $50k then I think you should focus on finding the, in your opinion, best sounding speakers for that amount. Don't worry about more expensive speakers.
If you want to compare $50k speakers with $200k I am no expert. I have heard both the m6 and some Utopias. My memory is that they had dynamics and an effortless that I have not heard from any sub $50k speakers.
A much cheaper speaker that also impressed without being as good was the Kii Three with bass modules. And Boenicke but I only heard the standmounts. MBL 101 sounds very good and starts around 70k if you can push your budget.
Good luck!
If you want to compare $50k speakers with $200k I am no expert. I have heard both the m6 and some Utopias. My memory is that they had dynamics and an effortless that I have not heard from any sub $50k speakers.
A much cheaper speaker that also impressed without being as good was the Kii Three with bass modules. And Boenicke but I only heard the standmounts. MBL 101 sounds very good and starts around 70k if you can push your budget.
Good luck!