You might find this an interesting read.
http://www.korgforums.com/forum/phpBB2/viewtopic.php?t=56309 It's me reflecting on the last 15 years and how little progress has been made compared to the speed the software / VSTi / DAW world has exploded in such a short space of time.
I'm also taking a pop at Yamaha who as the inventors of VL-Technology have lost all of their innovation. My rant hasn't very much to do with Arrangers specifically even though I do talk a little on the Tyros. It's more about everything in general to be honest.
Yamaha is milking their users like Cows. The Motif series has been milked to death, and the same can be said with the Tyros. There's nothing wrong with bring out new keyboards every 2 years, but for crying out loud lets see some seriously development and not incremental upgrades that could have been sold on a CD.
Regards
James