Ok...
From 1999 to 2002, I was a keyboard manager for Guitar Center in Towson,Maryland ( store 831).
I was also a demo guy for Ketron for a few years from July 1999 to 2002. Part of the reason I was a demo guy,is because I was an employee of GC and that ment that the GC keyboard buyers would come by the Ketron booth . I would show them (buyers for GC) a quick demo and even I as an employee of GC,having developed a sku and sell ketron products from a GC store, they could have cared less about Ketron ...
So,the ignorance of the buyers at the chain stores are a hugh factor in whether arrangers get purchased.. Hence...no arrangers in Guitar Center, except in their "A" store locations...Atlanta,Hollywood, Boston, etc....
Keyboard magazine has started reviewing a couple of arrangers in the recent past, BUT Even the way that writers at Keyboard Magazine has covered and reviewed arranger keyboards is very poor

, in comparison to the approach of a magazine like ..Sound on Sound , as a comparison....
http://www.soundonsound.com/ If Guitar Centers continue to expand,than arranger keyboards will be hard to find...
Regards ... Dan O'
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Ketron, Yamaha, Casio,Korg
http://www.baltimoremusiccenter.com 1-866-348-8876