Here’s my take after listening to each example. The Ketron Audya sounded most like a real drummer but a bit too busy for my taste. The Roland sounded the least realistic. The brushes, cymbal and especially the congas gave it a very unnatural sound. The Yamaha 950 seemed to strike the best balance as far as natural sound and feel. I hope we hear some Korg and compare some other styles. I really like these comparisons as it helps make more informed decisions. How many stores in the U.S. could you compare side by side a Ketron, Roland and Yamaha