Another vote for Billecart-Salmon Rose. It is my favorite by far. Cristal is my favorite overall champers. I also like Veuve Cliquot Demi Sec (Silver Label) and their Rose as well. Charles Heideseck is quite nice and inexpensive ($30ish). I'm not a huge Dom Perignon fan, but will get it for others to drink as most people think it's impressive. There are so many drinkable champagnes and sparkling wines - you don't have to spend big bucks to have good fizz.