I don't question your good faith (in regard to your other comment). But I can't point you to such a country, because unfortunately, all we've seen of communism at such a scale until now has been based on this Marxism-Leninism pile of crap (Stalinism, Maoism, and whatnot). That's the unfortunate truth, and why the simple mention of communism makes people's blood run cold. It's a meme at this point to say "real communism hasn't been attempted" but there's a part of truth in that; only a specific current has been, and each time proved that said current is a pungent pile.

Since communism is a dialectic philosophy, we could think that ML would've been thrown to its rightful place, the trash bin, but alas, some people are too attached to following a dated and distorted dogma to actually respect the ever evolving imperative of the movement.