Thinking about as you move from arranger to arranger through time, but you may also also learn new skills in areas such as sound design, and more in depth editing skills..

Whilst you may have more features / sounds In your newer arrangers, if you knew what you know now would it have made the Arrangers you had previously because you have gained a more in depth knowledge.
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Gem Wk4, Solton Ms60, Technics Kn5000, Korg Pa50sd, Yamaha Psr k1, Tyros 4, Korg Pa700