you may use the pair of omni mics and the visivox pre-amp.
you should place your mics as close as possible to your ears in order to get a binaural recording.
this pair looks like it has been made from panasonic mic capsules.
if you can find some audio samples made with giant squid audio labs omni microphones, you'll get a good idea of the rendition of your mics.
try
www.archive.org for free recordings.