I had an A+ for a long time (but was several mandolins ago...) and now own a FF. My A+ was a rather quiet mando and had a sweet tone so it wasn't suited to covering many musical bases (I'm sure others will have different opinions about their Rigels). But my FF is a great little beast with nice chop and plenty of volume, growls when needed and has a nice tone that is a musical chameleon. I love it and would not hesitate to recommend one...I just wish mine had the built-in pickup. A steal for the $.
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