My bad.
I should have specified that I was more looking at the mid – to high-end arrangers with the best sounds and features.
Regarding the fact that arranger manufacturers have the task of creating styles, having a vocal harmonizer, hard disk recording and so on, are they really providing more than what a high-end workstation is providing?
I mean workstations have hundreds of rhythms/loops/arpeggios, they have audio recording (Roland), and they have lots of sounds, and so on.
If you were to do a comparison between keyboards from the same manufacturer (workstation and arrangers), it would be very informative.
Roland G-70 and Roland Fantum x7
Yamaha Motif ES and Yamaha Tyros 1
Korg PA1x Pro and Korg Triton Studio 76
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TTG