Serious Compacts has published a review of the Ricoh GR Digital II.
Given that it features an f/2.4 lens and a 1/1.75″ sensor, I expected the GRD to perform well in low light. Overall it has met my expectations, although my impression from use is that the GRD sensor isn’t quite in the same league as the Panasonic LX3 and Canon G10 sensors when it comes to noise performance at high ISO.