Hi Phil,
Ducati Comfort seat is a good improvement over std. I found one late last year after nearly two years of looking.
My bike came with a Corbin king/queen tpye seat that was awful, I then bought a Sargeant seat that is very good (but takes a LONG time in the saddle to break in fully), but for Italy last year I reverted to a standard seat with a AirHawk air pad fitted.
For the price, I think, a superb option:
http://www.airhawk.co.uk/airhawk-for-bikes.html I think I opted for the 'Medium Cruiser'.