not that i am a guitar player, but i may suggest: martin acoustics are wonderful guitars. if you are in a recording situation, try to get some schoeps cmc 6 mics with mk 4 capsules (one positioned towards the top of the neck, the other to the resonance hole); try that with a fine reverb (like lexicon hall and tc flanger, not too extreme) - now here you have a real clinging acoustic...