Anyone have strong thoughts on whether DeMeo/ Soprano Crime Family is supposed to be DeCavalcante's or NJ Luccheses? I've heard good arguments for either.

The biggest arguments for me are-

NJ Lucchese Crew:
- Semi independent of Luccheses in NYC, similar to how Tony and Lupertazzi/ Sacrimoni are. Tony does ALOT of dealings with only the Lupertazzi family. We never see him working with other fictional NY families but extensively with Lupertazzi's.

DeCavalcante:
- Tony is referred to as a "boss", I believe the highest guy in NJ Lucchese's would be a Captain.
-Their base of operations is Elizabeth, much like the DeCavalcante Family.