Have downloaded Lightroom and DxO as a trial and developed numerous images with the two programs. It seems to me mainly on the image quality. Lightroom 5 is faster, but with lower BQ. DxO Optics Pro 9 is significantly more computationally intensive, but brings superior BQ. In addition, thousands of camera / Ogjektivkombinationen are included in the database all the distortion, vignetting and CA compensate. In addition, excellent One Shot HDR images can be generated. Have 2 sample images set in "customer images", unfortunately, Amazon reduced the resolution considerably, otherwise the differences would be even more apparent. Especially with high-ISO shots I have achieved with the "Prime" function excellent results that I could not achieve with Lightroom.
Absolute buy recommendation! But wait until the program under 100 on offer is.
Attention - for full-format cameras is the more expensive Elite version needed!