I've downloaded the latest version of DXO for Mac to demo. I love LR 2.1 and I have been converting my various Canon RAW files to DNG for archive purposes and to avoid misplacing XMP files. For 95%+ of my images, LR does everything I need, including printing. I find myself using PS CS3 (now CS4) less these days except for images with serious problems or for when I want to do creative pixel mashing.
Now that I'm playing with DXO, I really like the lens distortion and perspective correction capabilities. Aside from that, I think that the RAW conversions are on par with LR. Unfortunately, these features only work automatically with RAW files as DXO does not read DNG files and the auto features do not work on TIF files.
The DXO LR Plugin seems to work, but I have to keep original RAW files in order for DXO to do its thing. I'm looking for suggestions on how to incorporate DXO for Mac and LR into my workflow and, hopefully, be able to use DNG as my normal file format.