Hi,
over the last 15 years or so, I've had Technics, Korg , Yamaha & Roland Arranger Keyboards. My favourite is definitely the Technics as I find them easier and more intuitive to use. In the KN7 you've got a complete package. Good sequencer, great style creation features, sound editing etc.
and for me best of all audio & the sd card.

To me the types of styles are also fairly important. I like the kn styles, but they may not suit everyone. I find my 9000pro and VA7 slightly more suited to ballad & pop type styles whereas I prefer the Latin and (old time) dance & bigband music on my KN7.
It really boils down to the individual in the end and what pleases them.
Check out the keyboards thoroughly before you make your desicion.

best wishes
Rikki