I'm looking to purchase a gift for one of my coworkers, and she likes cognac.

I don't drink cognac.

I can obviously look up reviews of cognacs, but if you have a personal recommendation, then I'd put more weight on that than an anonymous internet review.

I'm not really concerned about price. I should spend enough that it's not below her standards, so at least $30 seems reasonable. I guess over ~$100 and I'd be hesitant because at that point it's making more of a statement than, "Thank you for being such a nice person to work with."

Any suggestions?