Wow, a positive review of Finnair European C. Yes, it is good because of clean, relatively new planes, usually just excellent service and real champagne in real glasses
The hard product (seats) are just that: hard. And not too spacious. And no food choice, the only option is not always that good.
I flew Finnar long haul last month in Y, and there they sold Joseph Perrier. Perhaps they can now get Nicolas Feuillatte cheaply, since SAS has stopped serving champagne on intra-European flights..