I'm loving it. ACR 4.0 is fantastic, if slightly more complex. For me the best parts are:
- The fill light is fantastic for bringing out details in the grooms suit. Also great for filling in shadows if the highlights are good but the midtones are underexposed a bit.
- Highlight recovery is great when there's a shaft of sunlight that's blown out. Does a good job.
- "Convert to greyscale" check box does a good job, which you can tweak.
- Vibrance control is better than saturation.
- New interface is good, I like the workflow.
- Love being able to open JPGs in ACR.
- Should be better with multi-core processors than CS2.
Downsides:
- Beta of bridge has a known memory leak so needs to be restarted every couple of hours, or after caching thumbnails.
- Tabs in ACR are smaller so you have to be more careful to click. Minor but important point when processing hundreds of images.
- Couple of the sliders don't slide properly yet.
I highly recommend the CS3 beta to anyone with CS2, or anyone without photoshop.
Threads:
- CS3 Beta infomration thread here.
- Thread with books I recommend, including CS2 RAW books, which is helpful and will tell you 95% of what the CS3 version will here.

Awesome....
