Stolichnaya is not really a brand, but a type of vodka. All distilleries in
Russia are allowed to distil it. Same goes with Polish vodka. Any newly
developed brands are distillery specific.
As for the Stoli Gold/ Stoli Cristal thing. There was a vodka called plainly
"Cristal" and than won the right to be called Cristal, so Stoli had to
re-brand to Stoli Gold.
Cheers!
George