Hi Ted,
it's a 'danger' question to people who has the K7
. Trying to be objective I should think it is not only the difference in sounds, styles etc. Afterall you can, what style/sound ever, load into the keyboard.
I made my choice f.e. on a few for me important and concrete 'features'as:
- new sampled sound(generator);
- 128 polyfony
- possibility of 4 waveboards
- lovely organsounds
- the SD-card!
- the USB/computer feature!
- video-out (althought I'v not used it yet)
- supplementary also the personal feelings as: the deeply sound, the touch and the design.
And last but no least,: my wife was OK, we eat only dry bread now
Success on making your choice,
greetings
Cees