Anything less than 10 or more than a 12 inch radius.
I will not, under any circumstances, trade anything of value for a "Daisey Rock", period. There, I said it.
Actually the answer is many things.
cost is a biggie - there are guitars I would love to have and will probably never get to hold, much less afford.
feel - it does have to feel right in my hands.
color/finish - PRS has spoiled me - if there are defects in the materials or finish from the manufacturer, I'm likely to pass.
style - I'm just not a pointy guitar guy - that includes even iconic shapes like the flying V - cool four you - but I'd feel like a poser playing one. The 3Mike7 I have on order is going to be a stretch (mentally and physically) for me
Check out Phillybri's band: Resonance
I've tried, just doesn't do it for me....
My rough list of deal breakers for PRS fiddles -
Middle Pick Up
Painted backs - opaque or trans - when there is a separate top wood. Don't paint the back of a Modern Eagle blue just because the top is stained blue.
As far as guitars go, I'm not a big fan of black finishes. Smudges and fingerprints drive me crazy, so I've never owned an all black instrument. Otherwise, poor or rude service turns me off immediately. I don't care if it's the deal of the century; if the sales staff doesn't cut it then my money stays with me. I don't expect them to bow and kiss my feet, but I want to be treated with respect and courtesy and zero BS.
Lloyd/Goldtop/Queen of Clubs
'And the answer is... none. None more Gold.'
It varies from guitar to guitar!