My first impressions, as a Lightroom user: image quality (Nikon, Sony NEX) is superb (although I have not compared side by side); catalog, an essential addition for those of us storing photos on a network drive; on the downside, the user interface is a bit wearisome, requiring lots of clicks and scrolls and drop downs to get things done. Perhaps things will get less tiresome once I learn a few keyboard shortcuts, and make some presets, but at present, it's a struggle to see what adjustments you have applied so far, etc. Still, great to finally have a more than worthy competitor to the also improving Lightroom, which has a simpler interface, leaving the fiddly one to Photoshop itself.