Don't forget to get an extra Lithium battery for whichever camera you buy. A good zoom lens for the DSLR would be 18 -105mm.
The majority of pics (indoor, parties, scenery) are shot in the 18 to 50 range. This applies to digital only (not comparable to the film cameras). The 50 to 105 range will be good for sporting events, wildlife, distant objects, etc.
I also have a 70 - 300mm Nikon zoom lens, but it is used less than 5% of the time.