I'm nowhere near the "big leagues" of photography.
My camera is the 2nd generation Sony entry DSLR, the a200. But it isn't so much the body that matters as it is the lens and person holding the camera, at least until you get up there with the a77/99 or Markx Canons/Dx Nikons. When you're talking about people that drop a couple thousand per body and keep two or three of them in a bag, that's when you've reached the "big leagues."