I have Aperture but have never really used it. My iPhoto library is getting larger and larger and with newer higher Mega-Pixel cameras, even more so. I'd like to switch to Aperture and read about storing files in more than one location, which I like the sound of. However, I also ready about iPhoto and Aperture able to share a "unified" library. Can these work together. Have Aperture store some files locally and other externally, but have iPhoto access them as one "unified" library though stored in separate locations. Would I have to import my iPhoto library to Aperture as to make Aperture the main library manager, then tell Aperture where to store some files, etc. And then have iPhoto just access the library. Also does this take advantage of the Aperture all versions in a single image? Does that mean that all manipulations need to be in Aperture? Can you have it so that a 2ndary library in Aperture is not part of the iPhoto unified library for all non photos (graphics, etc.)? Thanks.