Vietnam is communist in the same sense as China, which is to say that for everyday people it's still essentially a capitalist society but with full government oversight under 1 party. They may be headed by people who aren't as insane as US capitalists and still understand the need for social programs, but neither have fair elections and the people are at the mercy of their good will, which doesn't really seem in line with the general aims of communism.

Not sure of Cuba these days, but under Castro is also not quite what i had in mind.

Kerala though... they do seem to have a lot of things figured out there.