Do you plan to use air travel for transportation to any gigs?
Do you feel uneasy about checking your instrument in as undercarriage baggage?
Are you paranoid that an airline will lose your checked baggage on your way to a gig?

If your answer to all of three of these questions is yes, then get the A4.

Otherwise, Keys all the way.

I realize you said studio-only. I’m just bringing up the only real points I have against the Keys. And it looks like none apply to you.

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