About 18 years ago I bought a controller keyboard, a drum unit, a brass module and an acoustic module, it was fun to play with but a nightmare on the job. I own a S900 Yamaha and it is a good keyboard for the dollars spent and I am looking to go up a step.

My question:
I want a great Violin, trumpet and a sax for a section, how is the best way to add these instruments to my keyboard?
It has to be friendly and not to expensive.

John C.