A Rode NT2a is *not* an upgrade to an AT4040. More of a sideways move. There are lots of *real* upgrades, and not one of them comes cheap. So- as the others have pointed out, you need to know exactly what you intend to do with this mic. But- for a real upgrade to a 4040, you're looking a mics like Lawson L47, B.L.U.E. Kiwi/Cactus/Bottle Rocket, Neumann U87, Microtech Gefell, Brauner, etc.