sorry... I had a champagne cake for our wedding and it was INCREDIBLE!!! But she's up in Bellingham.. So I'm useless.. lol Sounds like you have some tastings to attend :P
You might want to check out Starry Nights Catering in Kirkland...they have boutique flavors, one of which is a champagne flavor. I will be doing a tasting there, even though it's kind of on the high end of what we want to spend for a wedding cake.
Re: best Champagne cake?
Sounds like you have some tastings to attend :P