There's probably noone that cares about this except me, but I though I'd mentioned it... I use the Yamaha S-YXG50 softsynth on a laptop computer whenever I have to play an acoustic piano gig. I just hook up my laptop to a powered speaker and go to work. Since I'm not actually editing on the laptop and just using it as a sequence playback device, latency isn't a concern. The program costs about $50 and it sounds very good.