Thanks for your replies. Here's some more light on the subject from a synth tech at music store in Stockhom:
• Voice allocation is a spanner in the works. Set all voice limits to zero. This forces dynamic allocation which is apparently smoother.
• Copy your favourite presets into user memories and edit out unecessary long tails in individual tones due to the envelope settings (or LFO's etc. controlling them).
• As usual if a busy mix features too many 4 tone sounds something has to give.

Apparently there are no differences in the above points between the 10 aand 2080.
As an added note I took a 2080 home and recorded a few sequences. I then compared them with some recordings done with a JV 880. I liked the JV 880's sound more! It seemed clearer, punchier and cut through a mix better. So go figure..
Thanks again, Jem