I just joined this forum because I'm on the fence between the pa3x and the Tyros4. I don't have either of these in the earlier generation. In fact I have no arranger now at all, just one Roland Fantom X. I think I've read and looked at all the reviews, forums and youtube videos for each. Unfortunately none of my major music stores carry hi end arrangers. So, with the great Tyros information available and so little on the pa3x, and without being able to sit down with each, it's hard to decide. What I don't understand about Korg is: If they can put out an excellent intro video for the Kronos like we have here, then why couldn't they have paid Jordan Rudess to spend one extra day with the pa3x and show off some good stuff. I would respect such a video even if he prefaced it with "I don't play arrangers but if I did ... then I would get this pa3x... and I'll show you why ...... Now that would impress me even if I knew he would never gig with it. But, because Korg kind of threw the pa3x into the water and seems to be letting it sink, I'm really feeling that the Tyros has a company that cares about its arranger. It boggles my mind. And I think the Kronos demo is great and I love the sounds. It's just that right now I want an arranger. So, Korg, just give a day's pay to someone who is cool and knows how to play and let them explore the unit. We all love to try out new stuff. I'm sure they would have fun with it.