What you might have heard about native OS-level support for Nikon D200 NEFs is true. With the latest 10.4.6 update, Aperture finally reads D200 NEFs! And the RAW conversion is pretty darn good. I'm finally playing around with my copy of Aperture (a Christmas gift from my brother). Arg, really slow on my 1.25 GHz PowerBook, but a very good and capable program. I have Lightroom Beta 2 as well, but I prefer Aperture because it does not lock you into modal-thinking. Lightroom has 4 modes, but Aperture's interface is fluid and suits my workflow preferences. Now I have to endure a long wait for the new Mac Pro's and hopefully a very short wait for Aperture 1.1. I believe Apple can turn Aperture into something truly extraordinary.