Thanks Johnny. I have taken the plunge and bought some Rico Royal 2's. At the same time I have upgraded my original mouthpiece to a Selmer S80 C* with a Rovner dark ligature. This package arrived today and although I have only tried the setup for a few minutes so far, the difference in tone is amazing.
The 2's do take a little bit more 'blow'. But I am getting a much better sound than previously.
I will stick with these now and am grateful for your advice.
The various areas of your website are proving invaluable.
Many thanks