Philly is indeed very good and quite deep but then again so is Chicago. I've played just about everything in Philly other than PV-admittedly a big omission. In Chicago I've played everything multiple times. My view is that Chicago Golf has the best greens in either city that I've played. They are very ,very good. I don't see a discernible difference between CGC and Merion. Both are equally outstanding courses. I think OFCC North is better than Aronimink but not by much. Beverly is at the same level as HVGC, Philly CC, or Gulph Mills. Shoreacres is better than Rolling Green. Other than PV, nothing in Philly compares to Butler or Medinah 3 in difficulty . Skokie would compare favorably to Lancaster, which I believe is the 4th best course in eastern PA. The second tier of course in Chicago is also really good- Flossmoor, OFCC South, Old Elm, Exmoor, Bob O Link, Black Sheep, Edgewood Valley, Briarwood, The Dunes Club, Lost Dunes, Point O Woods, Elgin CC, North Shore, Barrington Hills, Butterfield, and Kemper Lakes. Until I play Pine Valley, I have the Philly and Chicago in a dead heat.