Sadly, I have not tried any Alfred Gratien champagnes. Cedric Bouchard produces La Haut-Lemblee which is 100% chardonnay from 5 root stocks and La Boloree which is 100% Pinot Blanc. Mind you, these two cuvees from Bouchard are big bucks. Champagne Laherte has Les 7 (previously Les Clos) which is a blend of all seven permitted varieties (Pinot Noir, Pinot Meunier, Pinot Blanc, Pinot Gris (a.k.a. Frominteau), Chardonnay, Petit Meslier and Arbanne). Champagne Aubry has a cuvee which has 6 of the 7 permitted varieties. Another producer to look for is Godme. In 2010, Godme's Brut Reserve was the only champagne to be listed on Wine Spectator's Top 100 list. Champagne Tarlant's La Vigne d'Antan is a champagne's only 100% chardonnay grown on ungrafted vines. It is much cheaper than Bollinger's Vielles Vignes Francaises which is 100% Pinot Noir from ungrafted vines.