I just wish that manufacturers would 'tailor' their styles more regionally. European arranger users (except UK, perhaps) are going to use the Schlager styles extensively, whereas, in the States, it's unlikely that you'd EVER use one of these.
HipHop, R&B and Country rule over here, but perhaps less so in Europe. I feel that arrangers would lose much of their 'Mom and Pop' image in the States if they would pack their keyboards with young, 'hip' styles (you can still load 'em up with schlagers if you NEED them!).
Fantoms and Tritons are flying off the shelves, mostly because they have little triggered loops of hiphop and techno styles. Anyone remember the Yamaha DJX series? Massively popular because of the rap and hiphop beats inside.
When are the 'big three' going to realize that their arrangers are more capable of this than the Tritons, etc.? Just load a PA1X or a G70 up with just HipHop and dance styles, rename it the 'Xtreme Beat Machine'(!) and watch the fur fly!
The big three have extremely capable voicing programmers for their Workstation lines - time to let them loose on the arrangers!
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An arranger is just a tool. What matters is what you build with it..!