if the prices are the same.
n 364 will be a beter buy.a mid level pro workstation.(it's a beefed up x-3 with 64 poly and rppr(trigger loop/seqcing).I had x3 back in 1993 and I can say though the display is small it has dedicated buttons for seq/prog/combis.seq is easy to use.the sounds in general are way above those yams.
it's not more than 10 yr old(it was introduced in 1996-7 era).classic AI2 synthesis -think o1w/ x3 -unlike triton generation -it's warmer IMHO.you said you want to write your own music-it would suite you best.


the yam s03 is a beginner synth- no seq -think X5(new s-03 -499$).dgx 203 is a home KB .none of these two has Disk drive ,after touch or 16 ch seq like n364.



[This message has been edited by jamman (edited 07-17-2005).]