It shouldn't have to be either, or. I am working on songs and styles to import to my PA4X. Why?, because I have a $3000 keyboard that does everything I ask of it, and, I don't want to have to use a laptop for everything. To be sure, I am just getting re-acquainted with BIAB, but I can see it is awesome, but not to the exclusion of my hardware. To each his own.
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pa4X 76 ,SX900, Hammond SK1, Ketron SD40,Ketron Event X Centerpoint Space Station, Bose compact