Walter,
What prompted you to trade the KN7000 and buy the Tyros? I find the KN7000 has a far superior sequencer (Yamaha's sequencer is a joke), more intuitive user interface, better storage options (SD), slide show capabilities, better sounds overall, and sound expansion capabilites which the Tyros lacks. In addition the KN's sound edit capabilities far exceed those of the Tyros (even the KN5000, 6000, and 6500 have better sound editing capabilities). Add the fact that the KN7000 has a built in sound system that sounds wonderful, and overall the KN7000 just represents a much better value than Tyros.
I am a former Yamaha 9000 Pro owner and now having played and used the Technics KN7000, I can't imagine buying a Tyros. The only thing the KN7000 lacks that I would like it to have is a sampler. A 76 or 88 key KN7000 would be great! The 7000's incredible array of sounds and the extensive ability to edit those sounds makes up for it though.
Some people feel the Tyros Megavoices make the Tyros special but quite frankly, the Megavoices aren't all that great. I liked my 9000 Pro much better than I do Tyros and I'm sure many 9000 Pro owners would agree.
If money were no object I'd buy a Wersi Abacus Duo Pro but barring that, the KN7000 is my best option. I hope to join the KN7000 users list but won't make any buying decisions until after NAMM next week. Hopefully NAMM will bring the next best keyboard but I won't hold my breath.