Lehmann/Arnaud Lallement Glasses?

Does anyone have experience with Arnaud Lallement’s (L’Assiette Champenoise) lime of stems by Lehmann? I bought the No. 1 glasses from K&L on a closeout deal and I love them. This one is more or less a Burgundy glass with a beautiful shape.

I would like to pick up another set for Champagne and crisp whites and I’m wondering which other glass in the line might be best. They go from 75cl for the No. 1 down to 30cl for the No. 5. I’m thinking the No. 3 or No. 4 might be a good choice but would like other opinions.

Some friends of mine hosted Arnaud’s son last summer while he staged at Manresa and we had dinner with him a couple of times. He knows a lot about Champagne, not to mention for a 20-year old kid. He almost jumped out of his skin when my friend tried to serve Champagne in a narrow flute.