Hi Marco
I had a kn5000 for three years before I bought the 7000.I too thought the 5000 was great until I got the 7000. Much much better in every way. I good write a book on the differences.

I can't understand why you can't play the one in the store,but Rog is right. Investigate the sounds,etc.,but they are getting hard to find and if you can get one that is good,do it.

Bernie