Difference between two circuits

hi, building sound sensing circuit using electret microphones.  have tried many different schematics , suggestions overall cannot on problem pertaining sensitivity of microphone, has been able pick shouts, claps, , other loud noises close actual microphone.

i wondering if circuit:
http://wiring.org.co/learning/basics/microphone.html

will give me same sensitivity results circuit:
http://wiring.org.co/learning/basics/electretmicrophone.html

the latter picking loud noises, rather microphone circuit more sensitive.  have tried many different tutorials either exact in sensitivity latter link, or incomplete (links being taken down or steps missing, ridiculous know).

if neither of these routes give me sensitivity, pick large range of frequencies @ quiet loud volumes, recommend route?  new arduino in general, , sound sensing new - know asking possible won't give up!

thanks help.

one of problems you'll run trying pick quiet souds our perception of sound logarithmic, not proportional. means quiet sounds have far, far less power might expect. might not able picked 10 bit adc arduino has. if increase sensitivity of microphone, can't increase dynamic range of adc, stuck @ 60 db (roughly 6 db per bit). quiet sounds can lost in inherent noise of adc.

it depends. how quiet "quiet"?

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