Many of the best Champagnes are a cuvee. For example, Veuve Clicquot Brut is a fine champagne and quite affordable.
The give away here is the absence of a year on the label. Veuve is Madam Cliquot's remarkably consistent "non-vintage" - a stellar example of a vintner's ability to blend many barrels across the span of years - both good years and bad years - to produce a fine drinkable Champagne. I just happen to have a bottle in the fridge right now.
But as an aside, allow me to share a really fun thing to do when if you entertain in the summer - and something that highlights the entire discussion about how varied people's tastes can be. It's not an entirely original idea - I picked it up from some friends who used to do this annually - and everyone always looked forward to it.
Announce to your friends that you're having a "Champagne garden party" and that they're invited. The reason will become clear.
Buy a case of a very dry, very inexpensive bubbly. Something like Segura Viudas Brut Reserva will do, which can be had for less than $10/bottle, and be sure it's cold enough.
Go out and buy however large a variety of suitable fruits - sliced oranges and apples, peaches and apricots, and especially
every seasonal berry you can find - arrayed on plates in front of the following liqueurs.
Buy a bunch of different flavored cordials. You'll need to have a selection of the obvious go-to's on hand - like Creme de Cassis, Chambord, Grand Marnier, Pimms #1 Cup, etc, but also reach out there to some of the less common Alize's - and juice, if people just prefer Mimosa's. And it helps to have a few dozen champagne flutes on hand, too. These can even be rented - at least I recall being able to once-upon-a-time.
The idea is that all of these ingredients are arrayed so that people can make their own champagne cocktails. You never have to be "the bartender" at this "Champagne garden party" because all you're offering is inexpensive champagne - and whatever possible flavor floats people's boats. They can experiment - sample flavors they never considered buying before. Make their own drinks strong - or subtle. Find what they like, and settle down with it for the day. Don't even offer beer or hard spirits. If people ask, just remind everyone that it's a "Champagne garden party".
In the end, everyone will be left with the impression that they've attended something very refined and luxurious. Something about walking around with only a flute in your hand seems to create that impression.