... I catalog, sort and otherwise keep order with Aperture under Lion OSX 10.7.3. I own a Nikon D300 and a D700 - all serious editing done in NX2. Control point adjustments are terrific. As an amateur, I like to fiddle with images leisurely so I'm not concerned about speed and batch processing issues. I also use PS CS3 from time to time (no need to upgrade) for some HDR, pano-merge stuff and preparing for a print order done by a lab in New Jersey. You can export right from Aperture and send a PSD version of a Nikon raw file to CS3. Never tried Lightroom so I cannot compare and make no inference that one is better than another. You all can fight about that to your heart's content. Me? I'm very content with my workflow. Jason Odell's guide to NX2 has been very valuable to me.