Well for those styles of music then maybe acoustic sounds aren't so important for you after all a second hand Triton rack module maybe a good contender. Because analog types of synth sounds are probably more important to you for house and trance then perhaps a Roland JP8080 module or an Alesis Ion that both feature analog modelling may be more what you are after.
AJ may have provided the best solution. If you are doing all your music through a computer then softsynths maybe the best and cheapest choice. You could have a range of cutting edge softsynths for under $1000 that would cost many times more to buy in hardware. And they would sound just as good. And you could control them with your S03 keyboard over MIDI.
[This message has been edited by Nigel (edited 12-06-2005).]