Bought a litre bottle of Remy Martin Cognac Reserve Cellar Selection Cellar No. 28 at airport duty-free. Not sure what the "Cellar No 28" is about, but it comes in a bottle very similar to their XO bottle. Tried it last night, and it's extremely smooth, lots of caramel notes, slightly sweet on the very long finish, just a touch medicinal. I would like to try this side-by-side with the XO some time, as I think they're probably quite similar.