Well I haven't tried the Dom yet but I did try a bottle of Moet Chandon Imperial NV. It's not in the same category as the Dom, but it's what I had on hand over the weekend. It goes well with brie cheese and bread and white grapes. I found the champagne to be good overall, dry, a little sweet and a little sour at the same time. I am looking forward to trying to Dom on another occasion.
And no, I did not mix it with Diet Pepsi!