The Taig is a much better-built machine than those other two, and will handle materials (like metals) that they won't. But it has a smaller part envelope, especially in Y, so it depends on what you want to make. If the parts you have in mind will fit in its milling space, get the Taig. If you want to cut metals, get the Taig. But if you're making flattish squarish things in soft materials, you might be able to get by with something else. In that case, hold onto your money and keep looking...