I had stopped using Aperture and went to Lightroom 5 and Capture One 7. I am now totally frustrated with both. And am thinking of going back to Aperture.
Aperture, no doubt, of the three image manipulation software, has the best tools as far as Exposure, Contrast, Dynamic Range and other controls. What they are lacking are good lens correction tools and their sharpening tools are not worth a hill of beans (whatever a hill of beans is worth!) Aperture also has the best organizing tools.
Lightroom's Auto develop is way off the mark as are their White Balance settings such as "cloudy" and "shade." Aperture's and CO7's white balance are much more on the mark, and much more realistic.
Lightroom is much more clumsy to work with
It's great that Lightroom has so many presets whereas Aperture has few, but the B&W is much muddier in Lightroom than Aperture.
It's also great that Lightroom has all these brush tools and gradient tools to work with, but I find them clumsy and sloppy. CO7 probably has the best of the three with Aperture a distant second and LR miles behind. So what if LR5 has new brushes. They are not great, and the feathering is sloppy as are the edges. At least with Aperture there are separate feather tools and separate erase tools for brushes.
I can complete and process an image much more quickly and with less frustration with Aperture than with the other two.
Although I love the way CO7 is layed out, I find image processing a bit better in Aperture, despite what everyone says about CO7.
CO7's new catalogue structure isn't bad, but I believe Aperture is the best to organize photos. However, Phase One now has introduced Mdeia Pro for managing photographic files. These programs work hand in hand, although I haven't tried Media Pro. In my opinion, Media Pro should be part of Capture One and not a separate piece of software costing an extra 200 bucks.
I am also finding that the RAW NEF files take much longer to process in LR5. The histogram controls are not intuitive, in fact, they are counter intuitive and I still, after months of using them, find that results are unpredictable and using the histogram still is uncomfortable. With Aperture, I could look at a histogram and make one or two quick corrections that were spot on. With LR, I find I am always playing with the control bars as they take a lot of fine tuning to get it to look correct.
I work as professional photographer and some shoots I have thousands of images to sort through. It is not easy. PS is cumbersome, and I prefer not to have to go back there. I would rather go tback o Aperture than PS.
Of the three, I find that Aperture, although not perfect, has the least lag time and freezes and the fewest crashes. Now this wasn't the case when Ap 3 came out, but now with updates it is very stable. And I am still running Lion. Go figure.
Just some random thoughts from someone who was up all night in Kenya using LR5 to make a deadline.
I've been using Lr5 beta, not too seriously... but I did do an actual paid job with it. It's not quite ready for prime time. It's close, but I found several bugs that needed me close and reopen Lr. At one point I decided I needed to move the files over to Lr 4. The new Lr 5 catalogue can't be exported to the Lr 4 catalogue, So I finished up in Lr 5 beta. I am looking forward to it going live too... but it is still definitely a beta.