Dave Girard at Ars Technica reviews Aperture 2 and compares its RAW conversion to Bibble Pro, Capture One, and Lightroom.

Aperture 2 isn’t doing anything groundbreaking over the previous version, but the better overall speed and Quick Preview combined with background processing alone will be worth the cost of the upgrade for many users. If you’re just checking out Aperture since running like the wind from version 1.0, rest assured that Aperture 2.0 is a completely different animal and produces very good results most of the time. Its new interface is easier to navigate and is more customizable, so it will accommodate different users’ workflows...