I've spent a good bit of this afternoon trying to compare the two mentioned applications by trying to process the same image with each and match them as closely as possible. It's a frustrating exercise, but so far I'm disappointed in DXO. The images show less detail in DXO and some of the colors look unnatural. I'm posting here downsized copies of the two conversions. Larger, 4096-pixel-wide versions are available here. If anyone has suggestions for getting better results from DXO I would be pleased to hear it. I really like the UI of DXO and would like to use it.