Hmm. I don't know much about PnS cameras.
Check these reviews -
http://www.pcmag.com/article2/0,2817,2385965,00.asp
http://www.steves-digicams.com/knowledge-center/best-low-light-cameras.html
http://www.adorama.com/alc/0012810/article/15-Low-Light-High-ISO-All-Stars