I use Cubase SX and Wavelab 4.0, dedicated PC, and professional sound card: SoloEX8. I use everything. I use the sequencer on the keyboard and I also use the sequencer on the PC. For well thought songs, I use the sequencer on the keyboard, then I transfer the midi to Cubase. After extensive editing, I record the audio tracks and do even more editing. Finally, I start the process of mixing.