Knowing very little about champagne, I would assume Dom Perignon

I’m going to avoid the big famous brands that are more marketing than anything, and go with the producer I selected from a blind taste test of the regions producers when on a tour of the region.

https://www.tarlant.com/

Their Vigne d’Or is excellent.

Edit: Their Brut Zero an inexpensive staple.

Affordable : Mumm Cordon Rouge

Better : Veuve Clicqot Grande Dame

Better: Billecart Salmon

Better : Perrier Jouët Belle Epoque

Better : Krug

Better : … The list goes on and on, but it’s all down to personal preference and taste, this is my list

Cristal if you want to show off at the club.