I was sponsored by C1 for a number of years when it first came out. I still find it extracts more detail out of a RAW file than all others. I am currently looking at Raw Developer http://www.iridientdigital.com/products/.
I now only use C1 for RAW conversion, it is a lot of program for that sole purpose.
.... Raw Developer is the one Roger Clark was looking at, remember he has something to say about it and like it !! He is still out working on the oil spill !!