I'm not a wine expert nor do I play one on this forum.
I don't recall having a French wine that wasn't pisswater. On the other hand, I never had Italian one that wasn't at least decent.
Last time I picked up a bottle of champagne, it was by Bollinger. One of very few makers that still stores their stuff in oak barrels. ( Unlike some other peasant swill producers, I guess. ) Guess what ? Nothing to write home about
Somebody told me that a good way to gauge the quality of unfamiliar wine is to check its origin on the label. The more detailed it is ( down to a particular chateu ) the better. Any truth to that ?