I am seeing the versatility of the Pa4x for this purpose, and have gathered that most of the difference in listening to demos of WS is probably the fact that factory combi's are made by programmers with superior knowledge of the instrument, as well as orchestration in general.

But, hey, this is a small senior band of 10-20 old musicians playing to old people that enjoy our sound anyway. I can now see that the Korg will do all I ask, if only I knew the right questions.
Thanks all