I made two batches the first week of January (about 7.5 weeks), one with Montrachet and one with Cote des Blanc. Both with only one pound of sugar instead of two. My wife and I just found out last week that we are going to be expecting our second. So, I was thinking it would be neat to have a batch brewing for the same 9 months or so, then bottle it and give it away to family and friends when the time comes. To decide which yeast to use for the new celebratory batch, I pulled samples from each of my existing batches today and wanted to provide my thoughts and comparison between the two.
Montrachet is definitely dry. It fermented down to about 0.99. Hardly any sweetness, light body. I get a champagne vibe and think it will be good carbed up.
Cote des Blanc was sweeter. It only fermented to about the 1.008-1.010 and you can taste that difference compared to the Montrachet. It has more of an apple taste too which is true to form since the packet said that it was for fruitier wines. Because of the extra sweetness and apple flavor, it tastes more like a dry cider than the Montrachet.
I was going to take a picture and post, but they are identical in color and clarity, so nothing exciting to show.
I'm leaning towards sticking with the original recipe and using the Montrachet. The Cote des Blanc is good, but I think the dryer champagne taste of the Montrachet may work well with the occasion.