Perhaps it is just me, but I tend to think of the word 'keeper' as something that you DO actually keep and use over an extended length of time, something that outperforms your current 'keeper', NOT something you don't immediately return to the seller, which I'm afraid is often the way some of us use it...

What are Fran's REAL 'keepers'?

I'd suggest the G70, his Yorkvilles, and his Traynor K4. Had, and KEPT and used those regularly for a long time. Now, that's a recommendation I can believe in...
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An arranger is just a tool. What matters is what you build with it..!