[Benny]

As an Australian, the American-English seems to be the most common to me.

Apart from Ireland, we are the closest linked country to England and even we don't speak English-English on a whole.

As for accents, a lot of people I know find English-English harder to understand, for example, in American it's "Fish and chips" where in England it's "fesh n' cherps".

So my advice would be to copy the American variations and accent, but whatever works for you!