Brand loyalty or OS fatigue? My first arranger was a used i3 in 2009. Upgraded to a new PA50 in 2010 and a PA500 in 2011. Got the PA4X in 2016 and am very pleased with it. At 71 years of age, I am not inclined to learn a new OS and go through the torture of transferring files and styles and sets. And the Korg songbook makes everything so easy.

Duane