Thanks Flyboy. One of the great things about raw editing is that you can go back to the original. The BW edits are in Silver Efex. I can easily create a new tiff with the raw and do a new edit with the new tiff. Then, the two edits can be compared side by side. All the very helpful comments are underscoring the subjectivity that underlies photography- I guess one could say the artistic side as opposed to the technical side. 