The original poster gave a thumbnail of the notional requirements - "A room - usually in a pub - which holds 80ish people. No amplification. I want a guitar that will fill the room when playing a solo instrumental. That responds well to finger and plectrum style."
Could be geography-neutral, of course. Except if in a bar in Spain (for example) the requirements might be a bit different...
I guess we can also presume a seated, quiet, relatively attentive audience (from my recollections - tend to be a bit more talkative through the set over here in Oz, also not many purely acoustic venues unless you count some house concerts).