There is one cognac thread over in OMNI/PR, but I don't think it necessarily relates to this thread

In terms of Cognac, I'm a huge believer in spending the money to get the good stuff. IF you are willing to spend $50 for a bottle of wine at a meal, then I think you can afford to spend $150 to get a really decent bottle of Cognac. The Cognac will last a lot longer, since you can get a good 15 1.5 oz pours from a single bottle. And unlike wine, it won't go bad when you put it away after opening.

My favorite right now is the Delamain. Although I also must admit to having an affinity for Cointreau Noir, which is a blending of Cointreau and Remy Martin Cognac. MMMMMM.