I have both an A style and F style mandolin,and I prefer the F style. There are a couple of reasons why:
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The scroll allows for a more comfortable placement of the strap. I’ve never been a fan of using string to tie a strap behind the nut of an instrument. The same reason why I won’t buy a guitar if it doesn’t have a place behind the neck to secure the strap.
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The F-style body is much more attractive.
Honestly, the sound and tone isn’t any different between an A-style and F-style (at least that I’ve ever heard)…but for comfort and aesthetic appeal, definitely the F-style is the way to go.