-M1 -Arp Oddysey -Polysix -Wavestation -ms20 -mono/poly And the mde-x effects suite..
Together with the Gadget for Mac this gives you a lot of the typical Korg sound in a software environment..
(Roland is also going this route with their cloud) So how about Yamaha.. Combining the Korg and Roland sounds with a yamaha hardware synth like the Montage might be a future path to walk.. I have allways beleived that having the yamaha, korg and roland sound in your setup makes it feel complete..