The new KN7000 is a blast to play and the sound system alone is a vast improvement over the 6500.
All one needs to do is play it and if you have ears (Good ones) you can hear the difference.
It seems to me that lots of people enjoy "playing" with the controls,etc. instead of playing music.
I find that this machine is playable right out of the box,hundreds of great accomp., rhythms, sounds.
We really seem to take the simple and make it difficult.
Some of the technical stuff that people talk about on the forum do more to turn people off than on.
Try making it simple and you will enjoy the keyboard to it's fullest.
If you want to tinker, do it but play first.
Lloyd
PS: Who needs more sounds when you have so many already? More is NOT better !