Arrangers in Chicago area

I wanted to find out about stores that carry a wide range of arrangers in Chicago area. I am interested in cheking out:

Technics KN7000
Roland VA76
Yamaha Tyros
Ketron SD1

Any idea? I have already tried local Guitar Center and Sam Ash. They only have Yamaha PSR series or Korg PA. Let me know if you guys know of any store(s) that carry these.

TIA

American Music World. One on Milwaukee Ave. in Niles (847-966-1360) and others in Forrest Park and in Chicago. Great selection. Call Bob Frazier at above number. He knows everything about them and plays the KN every week professionally. Great guy.

Grandpa Doug

Awesome! Thanks for the info.

You might want to try Sound Post in Skokie and LaGrange and Brookdale Music in Naperville. I saw that they had a VA7 several months ago. I know Sound Post carries GEM. Maybe they carry others too.
Beakybird