Thanks Bob. I've seen the rather heated discussions about different types of light source and there is a noticeable difference, but let's not get into that old argument. One advantage I am finding is that the diffuser seems to lessen dust and the like on the neg. The room I have my equipment in is unfortunately carpeted but I have put a large antistatic mat down which helps to a certain extent. I'm working on "she who must be obeyed" to fit a laminate floor in the room but our priorities, as usual, seem to differ.
I'll plug on for the next few days and hopefully wil be able to post some examples next week. One major advantage over my previous darkroom is that with lens prices at a ridiculously low level I'm now able to print with significantly better glass than before.