My wife and I aren't big champagne/sparkling drinkers, but that doesn't mean we don't like the occasional Chandon.
I did learn my lesson on just how good the Dom can be when my wife and I shared a Sam's Club-purchased bottle of 1996 Dom (bought it for $105). Tightly wound, yet with clearly defined, deliciously clean flavors and great intensity. It is a benchmark bottle for me.