Translations differ. Compare Chapman's, Pope's, and Lattimore's Iliad. Or different translations of the Bible, or poetry - especially poetry.

Best is to read Amazon reviews - keep your salt shaker nearby - along with critical reviews. And translator's prefaces can be informative. If you're able, get different translations from your library and do a quick comparison. Sometimes readability is what matters. Finally, companion books.

In any case, the translation(s) will be different. But exactly how much that matters or should matter quickly becomes a difficult question. After all, you're not original audience. A further point about Nietzsche is that his sister, his executrix, corruptively edited his works. It's worth the forward and preface in any edition you get to see what they say. For starters, though, I'd go with Kaufmann; he was an expert on Nietzsche and his sister's depredations..

Yes, Kaufman seems good readability. The other copy with Tillie's translation was in archaic English like that of antique Bible.

Maybe I will need commentaries too? Even Kaufman sounds very poetic rather than Philosophic.

This might be helpful. — Πετροκότσυφας

Yes, that's great information too. Thanks.