Best Cognac

Zoya - if you can find Louis XIII for $900 jump on it! Wholesale on a bottle is around $1,600 for a 750ml. Won't be trying that anytime soon - that's a nice pair of IC's :-)

The cognac you're drinking as your very soon to be ex-wife walks out the door.

If you will forgive this, only unusually talented people spend hundreds or thousands dollars on a bottle of liquor.
Of what I tried Armenian cognac was the best. Most of that not so expensive French stuff tastes like purfume.
I prefer Scotch anyway.

Normandier-Mercier is too sweet. I simply do not believe that it is unmixed Cognac. Delamain Vesper is a bit dry and has too much fire. However Delamain Tres Venerable is great (don't expect sweet nectar) it is not, it is a "real thing" with no 'sugar' added. On the cheaper side of non-sweet Cognacs is Marquis de Gensac.
These are not truths just opinions.

Back in the days in Europe when I was still drinking Cognac I used to like Camus (both the writer and the Cognac).