Our purchases here in the U.S. are not really significant, as far as I know. International sales are a different picture.
I have two really great arrangers, Roland EA7 and Korg PA4X. Of course the Korg remains really close to a perfect arranger for me. Not without its faults of course.
The Roland sounds good, is very portable but lacks some of the features I like and use.
The new OS being released by Korg actually addresses some of my needs, such as ability to freeze KeySet.