Probably have to say a good TBA. Austrian ones (Kracher) are a favorite, but Noble One as noted is a stellar wine. And ages well. The cousins in NZ also make an extraordinary dessert wine. Palliser Estate actually makes one out of Chardonnay grapes that is sold i the 375ml bottle but with low shoulders as with the wine made from the same grape. The various German offerings are good but I like a thicker sweeter wine than most Eiswein or late harvest become. Still though wouldn't kick one out of bed for eating crackers.
The stuff from Inniskillin is a range that I cannot get my head around though. Seems sweet without the appropriate viscosity. Missing something.
Sauternes, any time yes please. And Tokaji is one that can come live with me any time also.
But as a favorite, I have to go with a good Neusiedlersee TBA.
On the Port and Champagne issue, I cannot think of anyone that would call something Port if it were not from Portugal. Californians who may do so are simply in the wrong. Treaties notwithstanding. A misnomer is simply that. Same goes for Champagne. Getting a name right is as important with wines as with many other things we enjoy. Americans get this as well and those who may label a product incorrectly are simply that, incorrect.