I've taken the 7-day free trial of newspapers.com so that I could evaluate.
So far, I would say, don't bother subscribing.
1 - you can't sort results by date
2 - New York City seems to be mostly New York Times early, which is free at the NYTimes site.
3 - No help for New Jersey
4 - About the same selection of "Atlanta Constitution" as on ACOM
5 - no option for word NEAR or keyword - very limited "advanced" search features.
If anyone would like me to try a sample search, please let me know.