It's my understanding that the D-370 is ISO 100 rated and the D-380 is ISO 400. Along with the fact that the D-370 is 1.3 Megapixels and the D-380 is 2.0. I haven't seen any nightime pics to see if the ISO rating makes a difference, but I would assume so.
I'm assuming the d380 would work like the d370..but not sure if anybody has tried it yet. If anybody wants to send me one, I'll be glad to rip it apart and test it out....no promises on return condition.
The properties on the d370 pics show iso setting on pics of 400. Not sure what that means though.