Softsynth recommendation for mpc1k?

[ujamaa7]

I have 350.00 credit at samash and was wondering what would be a good soft synth to go with my mpc1k. I'm into commercial production nowa days and i really cant afford a good keyboard like fantom motif etc;.....I need good sounds out of the box like strings brass organ guitar keyboard piano etc;....I want to use the mpc as a sequencer and the software for sounds...is it possible? What software would you recommend in the 350.00 price range?

THANKS A WHOLE LOT IN ADVANCE~