House of Delamain does not produce VS or VSOP Cognac, and their expressions are cut down to 40% ABV with low-alcohol, old Cognacs, rather than with water. They even rinse the bottles with Cognac before hand-labeling and sealing them with wax.
That's certainly saying something about their products. Some of the most popular expressions of Delamain Cognac include Pale Dry XO, Vesper XO, and EXTRA. Flavor profile typically features notes of dry, caramel, oak and vanilla.