I would’t rely on Mechon Mamre. Their translation is from the JPS which is a conservative publisher. I’ve even heard that the JPS’ first edition was mostly taken from the KJV.
Their format is nice and its great that they have everything readily. But the loss outweighs the gain.
Better to go with Chabad’s if you need a translation. Otherwise use the Mikraos Gedolos from HebrewBooks.org