If you are looking for bubbles for mass consumption, then ZYN's go to is a Spanish Cava. It's a lively bubble that will please one and all and the price is right, around $15/bottle. Try Poema Cava in either a Brut or a Rose.
Something more sophisticated? That $38 bottle will get you close to Champagnes quality without paying for it. Roederer Brut from the Anderson Valley is a great choice.
A non-vintage Champagne brings it up a notch. They are perfect for bringing to a get together with family and friends who enjoy Champagne. Veuve Clicquot or Bollinger are perfect examples of this quality of Champagne.
In the over one hundred dollar mark, these Champagnes are meant for milestones and moments. They aren't the wines you drink as often but are the ones you think about and remember. Consider Krug or Cristal.
Above all, buy what you can afford and enjoy!