Congrats on getting a 170. I moved up from the 150 last year and now I can shoot in very low-light situations with no problem at all, where the Panasonic could not handle same.
It's also very easy to handle and use - I'm sure you'll be very happy with it!
Last weekend we were in Phoenix to be with family over New Year's. I did some shooting outdoors at night with my trusty VX-2000, a close cousin of your 170, of some spectacular Christmas lights on the local Mormon temple grounds--
Amazing. I think the VX-2000 can see better in the dark than a human can.