If i were you i would go to Hungary.
Because i like movies set in Hungary..Bela tarr's movies.
It wont be the same as in the 80's or 90's but i still wanna go to Hungary.
It depends on so many things that only YOU know, like, Why are you travelling? Business, study, tourism? How much money do you have? Do you speak any of those languages? How long do you plan to stay?
All those are fascinating countries, but we can't really help you if we don't know what your purpose is.
PS Croatia, not Coratia.
Japan, Irland, England, and Australia
Poland, woot woot. but Ukraine from your choices