I have been trying it and am in the process of deciding if or not to buy it.,,,The LE version!...$99.
It has good points and bad points. The biggest good point for me is the ease of use and the ability to move quickly through a batch of pictures, making individual changes them putting them into the background processing Queue. It is busy doing the processing while you are prepareing more pictures. LE has a limit of 20 in the queue. :( , I like the output of CO best, but my wife likes Bibble's output better.
The downside of CO in my opinion is the Phase One Company. They have a terrific product, that they are very $proud$ of, but their marketing skills are graded F-.Business reliability and support seem to me to be severely lacking! The only saving grace in the support dept is their US marketer, Michael Tapes, at RawWorkFlow.com. He knows the product and helps a lot on his forum. If buying, I would buy from him and not from Phase One.
I like the program though, tho not enough to buy the Pro version at $499. (on sale till the 17th for $450.)
And then there's Bibble! Bibble is an excellent alternative, very fast workflow ,and faster processing,
http://www.bibblelabs.com/ and
They ARE a TEXAS Company. Austin no less. (Pro $129) Their support is absolutely Excellent+ via their forum. And Momma likes their output better....thus, I already own a copy of Bibble Pro, and just considering CO!