Ok, so I went to the liquor store. I was going to buy the Ferrand Ambre. I picked it up, and the guy there said that it was good, but he had a better one for the price, and handed me a bottle of Jules BeauprÃ© Cognac X.O. He said it was a 25 year old Cognac, and it was $30. They've steered me right at this store before (Schneider's of Capitol Hill), so I took the suggestion. Here's my comparison of The Jules BeauprÃ© and my Germain-Robin ($40). I'm not too experienced with this stuff, so don't laugh too hard at my descriptions.
Color: G-R honey, JB amber.
Nose: I can't pick out individual scents like some can, but the JB smells a bit sweeter. Maybe a honey-like scent. The G-R smells a bit more of alcohol.
Viscosity: JB is a bit thicker than the G-R.
Taste: G-R has notes of... I don't know, Dr. Pepper? Smooth. Good. JB, maybe a bit smoother, but perhaps not quite as interesting. Perhaps because I don't know this brandy as well yet.
FWIW, I like both. To me there's not a clear winner. I might go for the Germain-Robin a bit more because it seems a bit drier, but the Jules BeauprÃ© is very nice (and $10 cheaper).