The most extensive comparison I have seen so far is this:http://www.twin-pixels.com/raw-processors-review-aperture-bibble-capture-one-dxo-lightroom/It deals with Bibble 5 rather than ASP (and some of the issues have been resolved). I like how Armand Niculeso stresses that you really cannot compare RAW-Converters by their default settings but rather work backwords from the result you are trying to achieve. Lightroom would not be the market leader if it did not do most things right. Image quality with ASP is very good and - depending on camera manufacturer -- sometimes even superior. ASP's speed in any case is unmatched, so give it a test spin and see for yourself.