I still always do my initial 'capture' in my Roland's, then transfer to Cubase. I'm sorry, but while you CAN do most of what you want in an arranger's sequencer, who on earth would want to? LOL
Nice big 27" screen, mousing to select (or conditional selects), sophisticated editing options... Or a tiny screen and no mouse.
Tough choice!
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An arranger is just a tool. What matters is what you build with it..!