The 1.1 update vastly improves conversion of Canon EOS-1Ds RAW-files, but Adobe Camera RAW (ACR) is still far superior. Aperture 1.1 deals much better with chroma noise (=high ISO images) than previous versions did and seems to employ a much improved de-mosaicing algorithm. But chroma noise is still strong compared to ACR, and Aperture still produces nasty halos and other artefacts in areas of stark contrast. Also, the default rendering of Aperture's RAW-converter is still far more contrasty and saturated than what I'd consider neutral - more of a Kodacolor rendering, which is not suitable for a professional imaging application, IMO. Usability is great as before, but if image quality is sub-par, I prefer more complicated workflows that result in higher quality images. Two stars for now - 1.0.x was unusable for me, so this rating is a clear improvement. Keep trying, Apple! A few more updates like this one, and you've got it right - and you'll get more stars to boot ;)