I searched, and didn't find any threads on this. I'm looking to get one of these programs, since Lightroom is in beta, and a free DL, I have tried it. Aperture, I have not. I find lightroom to be slow in transitioning from one photo to another, needless zooming, and just a bit sluggish. I understand its still in beta mode, and figure the final release will be a bit better. So what does aperture do that lightroom doesnt? what does lightroom do that aperture doesn't? Those of you that have used both, which do you prefer?