Starkeeper, you can put together a very good sounding system just as you indicated. You do not need the top of the line PC to equal the best workstation or arranger keyboard sounds. The costs start escalating when you want to go top of the line accoustic instruments and effects. You could likely equal the quality of the PSR3000 with a Dell PC at $600 with a free soft synth and thousands of free (average) soundfonts.